We find different kinds of animals in the world. Some animals, such as tigers and lions live in big forest and they are called  (1)  animals. Some others like sheep and dogs are  (2)  by men and they are called domestic(驯养) animals. These animals are very different from one another, but we can  (3)  them into big groups: those that eat other animals and those that eat grass and leaves. Animals like the  (4)  belong to the first group.

       Animals are  (5)  great uses to human beings. Men  (6)  wild animals for their fur and meat. Domestic animals are  (7)  more important to men. Without them, life will be  (8)  . People make use of animals in many  (9)  .

       Cows and dogs are useful to men’s  (10)  . They give 80% of the  (11)  men eat every year. Skin of some animals can be  (12)  into expensive overcoats and shoes, which are warm and comfortable and  (13)  a long time. They are very welcome in  (14)  countries. Wool, which is now one of the most important material for textile(纺织)  (15)  , comes from a special kind of  (16)  . From cows, we get milk. And we shouldn’t  (17)  that some domestic animals are kept for transport. Many people  (18)  ride horses. Arabs ride on camels which travel in deserts for days without  (19)  . In some places animals are still used to plough field.  (20)  is clear that men just can’t live without these animals.

Dear Son,

 I have been thinking very hard about how your little world is about to change. For two and a half years, our_(1)_ have been on you every morning and night,_(2)_ your wet hair after you have a bath,_(3)_ away every one of your tears when you get _(4)_ and cry, and hugging you on the couch.

 After tomorrow, we'll have a little baby and you'll be going from being our little boy to our big boy and a big _(5)_. I still _(6)_ becoming a big sister myself. At that time, I was almost eight, so it was very _(7)_from the way it will be for you．Your father was 10 when his first sister came along, but _(8)_ of us knows what it will be like for you.

 I remember how much I _(9)_ sharing the love, and I shouted when my brother_(10)_ my birthday party. I_(11)_ him over and he needed stitches（缝线） to fix the cut above his eyebrow. I was very_(12)_for being so rude to him and I was nicer to him from then on. Your father was much _(13)_ and was more patient than I was back then.

 I know that this will_(14)_you—for the better, I hope．You have _(15)_ told me that you are not a baby any more, and I can see that you are taking big steps forward into _(16)_. I hope that _(17)_your little sister comes, you will enjoy our new family.

 You love to look at the_(18)_of yourself when you were small. They are very sweet memories for us. We had a（n）_(19)_ start when you were born, and so your sister's birth has been organized _(20)_. You rock my world, little man, and I will be holding your hand in mine to take the big jump forward to this new step.

With all my love,

Your mummy

Dear Son,

   I have been thinking very hard about how your little world is about to change. For two and a half years, our 1 _______ have been on you every morning and night, 2______ your wet hair after you have a bath, 3________ away every one of your tears when you get 4________ and cry, and hugging you on the couch.

   After tomorrow, we'll have a little baby and you'll be going from being our little boy to our big boy and a big 5_______. I still 6______ becoming a big sister myself. At that time, I was almost eight, so it was very 7 _______ from the way it will be for you. Your father was 10 when his first sister came along, but 8________ of us knows what it will be like for you.

   I remember how much I 9_______ sharing the love, and I shouted when my brother10 ______ my birthday party. I 11________ him over and he needed stitches(缝线) to fix the cut

above his eyebrow. I was very 12_______ for being so rude to him and I was nicer to him from then on. Your father was much 13________ and was more patient than I was back then.

   I know that this will 14_______ you—for the better, I hope. You have 15________ told me that you are not a baby any more, and I can see that you are taking big steps forward into 16_______. I hope that 17________ your little sister comes, you will enjoy our new family.

   You love to look at the 18________ of yourself when you were small. They are very sweet memories for us. We had a(n) 19_______ start when you were born, and so your sister's birth has been organized 20______. You rock my world, little man, and I will be holding your hand in mine to take the big jump forward to this new step.

With all my love,

Your mummy

Dear Mom and Dad,

     I’d like you to know that I appreciate everything you’ve done for me, such as teaching me, taking care of me and loving me.

     I’m writing this thank-you letter, Mom and Dad, because I want you to know what a big     (1)   you have truly made in my life. You   (2)   me so many things about the world and myself. You were the first ones to tell me about the importance of   (3)   by telling me it was  (4)  to refuse all my other playmates from using my toys. And to this day,  (5)    those toys are long gone, I  (6)  to live by the idea of sharing my blessings with the people    (7)  me.

 Mom and Dad, you also  (8)   me to be sympathetic(同情的) towards the blind old man. You told me that our pets are there for us to   (9)  and not to hurt. And because of those   (10)  , I’ve learnt to be  (11)  .

 Thank you, Mom and Dad. You gave me some of the nicest  (12)  . Mom, I remember how you would let me sleep in your bed and how you  (13)  to bring me my favorite fried chicken and take care of me whenever I was  (14)  . Dad, I remember how you worked  (15)   to make me a playhouse in the yard so my friends and I could  (16)  happily there.

 I may have  (17)  you and your purposes when I was much younger. But now I know that everything you did was for my own  (18)  .

  Mom and Dad, I  (19)  this thank-you letter is enough to let you know how much I   (20)  you for everything you’ve done for me. 

                                                                                                                                                                                    Rex                                                                     

Dear son,

The day that you see me old and I am already not in good health, please have patience and try to understand me.

If I get dirty when eating, if I cannot dress, have patience. Remember the hours I __41__ with you. If, when I speak to you, I __42__ the same things thousand and one times, do not __43__ me, listen to me. When you were small, I had to read to you thousand and one times the same story __44__ you got to sleep. When I do not want to have a __45__ , neither shame me nor scold me. Remember when I had to chase (追逐) you with thousand excuses I __46__, in order to have you bathe. When you see my __47__ little about new technologies, give me the necessary time and not look at me with your mocking（嘲弄的）smile. I taught you __48__to do so many things: to eat good, to dress well, to confront life. When at some moment I lose the__49__ or the thread of our conversation, let me have the necessary time to remember, and if I cannot do it, do not become nervous, as the most important thing is not our conversation but surely to be with you and to have you __50__ to me.

If ever I do not want to eat, do not force me. I know well __51__ I need to and when not. When my __52__ legs do not allow me to walk, give me your __53__,the same way I did when you gave your first __54__. And when someday I say to you that I do not want to __55__ any more ---that I want to rest forever, do not get angry. Someday you will understand.

Try to understand that my age is not lived but survived. Some day you will discover that, ___56___ my mistakes, I always wanted the __57__ thing for you and that I tried to prepare the way for you. You must not feel sad, angry or impotent （无可奈何）for seeing me __58__you. You must be next to me, try to understand me and to help me as I did it when you __59__living. Help me to walk, help me to end my way with love and __60__. I will pay you by a smile and by the immense love I have always had for you.

I love you, son.

Your father