31．-What happened to the young trees we planted last week?

-The trees ____ well, but I ____ them.

A. might grow; hadn’t watered　　 　　 　　　 　　　 B. needn’t have grown; didn’t water

C. would have grown; didn’t water　　　 　　 　　　　　　　 D. would grow; hadn’t watered

30．After five years of preparation, Shanghai is presenting the world _______ many say is the greatest Special Olympics.

　　 A. when　　　　　　　　　 B. what　　　　　　　　　　　　 C. where　　　　　　　 D. which

29．At the Copenhagen conference, all the countries were called on to do all they could to control greenhouse gas emissions 　　　　it was too late.

　　　 A．when 　　　　　　　 B．after　 　　　　　　　 C．until　 　　　　　　　 D．before

28．Catherine, ____ the alarm clock for 6 o’clock, or you would oversleep and be late for the train.

　　 A. setting　　　　　　　　 B. sets　　　　　　　　　　　　　 C. set　　　　　　　　　　 D. to set

27．-Do you think he will do me a favor?

-As far as I know, he is the last one to help others. He ____ be prepared to give you a hand, though.

A. might　　　　　 　　 B. must　　　　　 　　　 C. can　　　　　　 　　 D. should

26．-Isn't it a surprise that I happened to meet Francis Mafhews at the Christmas party last week?

　　　 -If my memory serves me correctly, you ____ each other for exactly two years．

　　　 A．hadn't seen 　　 B．haven't seen 　　 C．didn't see　　　 　　　 D．don't see．

25．That the truth came out panicked him. But he didn’t want to ________ his fears and insecurity to anyone.

　　　 　A. link　　　　　　　　　　　　 B. associate 　　　　　　　　 C. expose　　　　　　　　　　　　　　 D. deliver　　　

24．Soldiers stood next to a police truck, looking at the crime scene _______ a woman was gunned down in a poor neighborhood of the border city of Iran October 18, 2009.

A. that　　　　 B. which　　　　　 C. where　　　　　 D. why

23．To her disappointment, what she had devoted herself to ____ in nothing but failure.

A. resulting　 　　　　 　　　 B. results　　 　　　 　　　 C. has resulted　 　　 　　　 D. resulted

22．---- Hi, Maria! I got the first place in the exam.

---- ______ ! Everyone knows you cheated and you just copied Tony's.

A. Congratulations　 B. Come on　　 　　　　 C. Good luck　　　 　　　 D. Cheer up.