31.我原以为你喜欢火星。

　 I______________________________________________．

30.(　 ) 一Hi，Mary．_______?

-Not so well．I can’t keep up with the other students．

A．How long have you studied chemistry　　 B．Who is teaching you chemistry

C．How is your chemistry study going　　 　D．Where are you 1earning chemistry

29.(　 ) 　_______people we help,　 ________we feel.

　　 　　A. Many, the more happily　　　　　　 　B. The more, the happier

　　 　　C. All, the happiest　　　　　　　　　　 D. Most, the most happy

28.(　 ) –Dad, _____ I take your camera? ---Yes, you can.

A .must　 B. could　 C. might　 D. need

27.( 　) I don’t know when he _____ tomorrow. I think if he _____, I’ll go to see him.

A. comes, comes　　　　　 B. will come, comes

　　　　 C. will come,　 will come　　 D. comes,　 will come.

25.(　 ) _____ of the students will take part in the sports meeting.

A. Three five　 B. Three fives　 C. Thirds fifths　　 D. Three fifths

(　 ).26. A large number of students _____ playing football on the playground.

A. is　　 B. to be　 C. have　 D. are

24.(　 ) The hard work made me _____ very tired.

　　　　 A. feel　 B. to feel　 C. feeling　 D. feels

23.(　 ) They were ______ busy _____ with each other ______ the time.

　　　　 A. too, to talk, to forget　　　 B. too, talking; to forget

　　　　 C. so, to talk, that they forgot　 D. so, talking, that they forgot

22.(　 ) The Smiths _______ sending e-mails _______ letters．because it is faster．

A．prefer, to writing 　　　　　　　　B．prefer，to write

　 　　　C．prefers，to writing　　 　　　　　D．prefers，to write

21. The old man told us _____ across the street yesterday.

A. to not go　 B. don’t go　 C. didn’t go　 D. not to go