At the beginning of this century, medical scientists made an interesting discovery; we are built not just of flesh and blood but also of time. They were  (1)  to show that we all have “a body clock”  (2)  us, which controls the  (3)  and fall of our body energies,  (4)  us different from one day one to the next.

The   (5)  of “a body clock” should not be too  (6)  since the lives of most living things are controlled  (7)   the 24 hour night-and-day cycle. We feel  (8)  and fall asleep at night and become   (9)  and energetic during the day. If the 24 hour-cycle is  (10)  , most people experience unpleasant  (11)   . For example, people who are not  (12)   to working at night can find that  (13)   of sleep causes them to  (14)  badly at work.

  (15)   the daily cycle of sleeping and  (16)  , we also have other cycles which  (17)  longer than one day. Most of us would   (18)  that we feel good on some days and not so good on  (19)   ; sometimes our ideas seem to flow and at other times, they  (20)  ​do not exist.

Their wealth, fame and power put their heads and shoulders above us ordinary people. But according to these   (1)  , true happiness lies in some of life’s   (2)   pleasures. David Cameron, Ed Miliband and Nigel Farage all   (3)  that their families are the key to their well-being. But others gave unexpected brief ideas about their celebrity lives. The Duchess of York Sarah Ferguson, 55,   (4)   that what most keeps her spirits high was a   (5)   in magic and fairies. She said, “I do believe in fairies. I do believe in magic and when you blow on a dandelion（蒲公英）, you will see the light of the enchanted （被施魔法的）spreading their wings and   (6)  on their own journeys, just like you have today when you opened your eyes. Don’t let the day   (7)   without looking for fairies and magic. That makes me   (8)  , as every day is.”

Meanwhile, former Beatle Sir Paul McCartney revealed that he got his   (9)   through his stomach as well as his family. He said, “I love to hear the noises in the  (10)   as the meal is prepared and then my little grandson climbs on my knee and   (11)  a bite for every bite that I take.”

Food was also   (12)   to Strictly Come Dancing judge Len Goodman who said eating a bacon sandwich was enough to   (13)  a smile on his face, while rocker Rod Stewart, claimed that a simple cup of tea made him  (14)   happy.

For our most gifted sports stars,   (15)  , it seems the key to the good life is a   (16)  dog.

Tennis champion Andy Murray said he badly   (17)  Rusty and Maggie May when he was playing in tournaments around the world. Former England striker Gary Lineker   (18)   , saying, “Walking my dog makes me happy.” The joy at the word “ walkies” never decreases. Such   (19)    for something so simple is   (20)  satisfying. 

    When your child is supposed to be doing homework, are they chatting with their friends on Facebook or playing games? Many studies have shown that multitasking doesn’t   (1)  ,   (2)   your child is probably proudly claiming they can do ten things   (3)  ! Many people believe that they can   (4)   two or more tasks at the same time, but Dr. Edward Hallowell says this is   (5)  . The reality is that multitasking   (6)   poor job performance.

    New hand-held   (7)   such as smartphones, iPads, games and social networking sites make it very easy to multitask and “attention   (8)  ” leading to difficulty focusing on the task   (9)  , such as listening in the classroom or doing homework. “  (10)  , the brain actually   (11)   kids for multitasking even if performance on every task gets worse and worse. Kids don’t know they’re doing   (12)   because they feel better when they multitask,” says Dr. Edward Hallowell.

      (13)   the appearance of hand-held devices and social networking sites, teachers have noticed a difference in   (14)   performance, critical thinking skills and how information is   (15)  . “Multitasking prevents people from gaining a deep understanding of the information they are trying to learn,” says Dr. Edward Hallowell. Kids have a difficult time sticking with a “difficult to understand” topic and   (16)   to allow themselves to be distracted（分散的）, to tune out and switch   (17)   to Facebook or using their cell phones   (18)   working harder at understanding a difficult subject or problem. In the long   (19)  , multitasking affects grades, One study showed that kids that use the Internet while in class did   (20)   on tests resulting in lower grades.

In Britain, people usually pay careful attention to politeness. All politeness is based on the rule of showing consideration for others, and expressing thanks for the ____（1）____ they show to you.

    "Excuse me" is used as an apology for ____（2）____ somebody, as when cutting into his conversation or ____（3）____ in front of him. "Sorry" can be used to replace "no" when you cannot agree to a (an) ____（4）____ like "May I borrow your pen?"

    "Pardon?" is the polite way of asking somebody to ____（5）____ what he has said. "No, please", so ____（6）____ abroad, would sound unusual in Britain. "Yes, please" is widely used and it is the opposite of "No, thank you" when replying to an ____（7）_____. When asking for help, British people may say, "I know the trouble I'm ____（8）____ you, but would you mind…?" Similarly, it is often polite to ____（9）____others by means of such a reply as "Please don't bother," followed by an ____（10）____ of why you can do without it.

    ____（11）____ you are invited to someone's home, there are other questions to think about. What time should you arrive? If it is just a social occasion, not a ____（12）____ one, it is not polite to arrive early. Your hostess will be ____（13）____ you, and will be ____（14）____ if you arrive before she is quite ready. Of course, your hostess will be very ____（15）____ if you buy her something, ____（16）____a bunch of flowers. Then too, the British are very ____（17）____ about table manners. The following are important things for you to ____（18）____：sit up straight, copy everyone else, and ask what to do if you are ____（19）____. What time should you leave? There are no rules, but it is most ____（20）____ to stay too late.

In the past, boredom was just part of life. You didn’t have a phone to   (1)   you in the car. You sat in the back seat and stared out of the window. But today, boredom is easy to   (2)  . You can fill   (3)   time with apps, Xboxes and computers.

    In fact, being bored can get you into real   (4)  .

    Boredom can lead to worry (Should I be doing something?). It can lead to bad   (5)   (I’ll ride my bike down the stairs --- what could go wrong?). People who are bored may   (6)   be more likely to abuse alcohol or drugs.

    According to some experts, however, it turns out boredom can be   (7)   for you. Why? It has to do with the   (8)  , which has two ways of paying attention.

    The first way of paying attention is what helps you with what’s   (9)   around you. It helps you listen to your teacher, catch a ball, and joke with your friends. That’s the part of the brain you use   (10)   you text, play games and watch TV.

    The other way of paying attention helps you think about how you   (11)  . It helps you sort out your feelings about a fight with your brother. It helps you   (12)   the joy of baking cookies with your grandma. That’s the part of the brain you use to be   (13)  , daydream and imagine your future.

    But these two parts of your brain can’t both   (14)   at the same time.

    So what happens if you’re always   (15)  ? You’ll only use the first part of your brain. You’ll   (16)   use the thoughtful part. If this part of your brain doesn’t work well, you may not know what you really feel. You can be   (17)   of what you really want.

    That’s why it’s   (18)   to learn to be bored. Being able to do   (19)  --- happily --- is an important skill. It’s something you have to practice,   (20)   it will feel much more rewarding than computer games.

What should we do when selecting a friend? It is important. We’d better be careful. A good friend can helpus study. We can have   (1)   together and make each other happy. Sometimes we will meet fair-weather friends(酒肉朋友). They will be with us as long as we have money or luck, but when we are down, they will   (2)  . How do I know when I have found a good friend? I look for certain qualities of   (3)  , especially understanding, honesty and reliability(可靠).

Above all else, I look for   (4)   in a friend. A good friend tries to understand how another person is   (5)  . He is not quick to judge. Instead, he tries to learn from   (6)  . He puts himself in the other person's place, and he tries to   (7)   ways to be helpful. He is also a good listener.

At the same time, however, a good friend is   (8)  . He does not look for   (9)   in others. He notices their good points. In short, a good friend will not tell a lie: he will try to understand me, trust me and   (10)   me.

Another   (11)   of a friend is reliability. I can always depend on a good friend. If he tells me he will meet me somewhere at a certain time, I   (12)   believe that he will be there. If I need a favor, he will do his best to help me. If I am in   (13)  , he will not run away from me.

There is a fourth quality that   (14)   a friend happy. A friend is someone with   (15)   we can have fun. We would enjoy our lives, and we would enjoy our friendship. That is   (16)   I especially like friends who are funny to be with. A good friend likes the same things I   (17)  . We share experience(经验) and learn from each other. A good friend has a good sense of humor(幽默感), too. He likes to   (18)   with me. That is how we share in the joy of being friends. And I know that he is looking for the same quality in me.

When I meet someone who is   (19)  , honest, and understanding, I know I've   (20)   a friend!

Much meaning can be conveyed clearly with our eyes, so it is often said that eyes can speak. Do you have such kind of   (1)  ? In a bus you may look at a   (2)  , but not too long. And if he is sensing that he is being stared at, he may feel   (3)  . It is   (4)   in daily life. If you are looked at for more than necessary, you will look at yourself   (5)  , to see if there is anything   (6)   with you. If  (7)  

 goes wrong, you will feel angry toward his or her stare at you that way. Eyes do   (8)  , right?

Looking at someone too long may seem to be  (9)   and aggressive. But things are different     (10)   it comes to staring at the   (11)   sex. If a man glances at a woman for more than ten seconds and   (12)   to move his gaze, his intentions are obvious, that, he wishes to   (13)   her attention, to make her understand that he is   (14)   her.

However, the   (15)   eye contact for two people in conversation is that the speaker will only look at the listener   (16)  , in order to make sure that the listener does pay attention to what the former is saying. As for the listener, he will to some extent look   (17)   at the speaker, to tell him that he is attentive. In fact, continuous eye contact is limited to lovers only, who will   (18)   looking at each other gently for a long time, to show affection that   (19)   can’t express.

Obviously, eye contact should be done according to the   (20)   between two people and the specific situation.

 Sometimes, you are stuck in traffic, anxious about getting a job, or stressed about making a deadline at work. _  (1)  ___ as these situations are, they are also opportunities to ___  (2)  ___ kindness and gratefulness. Responding gently and thankfully will not ___  (3)  ___ make these situations go away, but it can help you be happier and ___  (4)  ___.

   As someone who travels as part of my work, I find that when I practice looking for ___  (5)  ___ to be kind and grateful, travel is a much more ____  (6)  ___ experience.

   The mental and physical _  (7)  __ of kindness and gratitude are impressive. Such simple practices not only make you feel good, ___  (8)  ___ they can also help protect your immune system, reduce stress and anxiety, strengthen self-control. That is, simple practice done regularly can __  (9)  __ both your physiology and your outlook. It is more likely that you also view the future ___  (10)  ___

   However, being kind and grateful is not a (n) ___  (11)  ___ for working toward important goals, or dealing with challenge. Practicing kindness and appreciation is a way to ____  (12)  ___ the quality of your experience and relationships while you are doing these things. ___  (13)  ___ what your brain may tell you, your ability to be kind and grateful is not _  (14)  ___ upon either your circumstances or how you feel. _  (15)  ___ simply, kindness and gratitude are available to you whenever you choose to practice them.

   During your lifetime many things will happen. You will experience some of them as pleasant and comfortable and others as __  (16)  ___ and unwanted. You do not have control over the circumstances that life ___  (17)  __, but you do have a choice about how you _  (18)  ___ to them. Reacting to whatever __  (19)  ___ up with kindness and gratitude is a powerful ____  (20)  __ , a choice supported by hundreds of scientific research studies and recommended in every enduring wisdom tradition for thousands of years.

   What will you choose?