（1） A study shows that the safe driving speed r_______________(变动)from 60km to 80km per hour.
（2）PearlS. Buck is one of the most popular literary f___________(人物) in American literature，who spent almost half of her life in China
（3）We’d like to offer our _________________（祝贺）to you on your passing the College Entrance Examination.
（4） Bythe year 2020 it is likely that we __________________(取代) injured bones or even organs like livers and kidneys with ones “grown” in laboratories..
（5）Father went into his study to work on his novel and ____________（同时）mother went on talking with her friend on the phone.
（6） She had some acupuncture treatment which seems _____________________（治愈）her.
（7） We cannot guarantee the _______________（准时）arrival of the flight due to the foggy weather.
（8） Virtue and vice are different things, the former leads to peace while the __________（后者）to misery.
（9） In this course, we will train all the students to speak English _____________(流利)and accurately.
（10）He was about to leave when he found himself _____________(围绕) by pupils full of curiosity.