第二部分：英语知识运用(共两节,满分45分)
第一节：单项填空（共15小题，每小题1分，满分15分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
21. ----- I'm sorry I made a mistake!
----- . Nobody is perfect.
A. Take your time B. You’ re right C. Whatever you say D. Take it easy
22. David had prepared carefully for the chemistry exam, so that he could be sure of passing it at his first _______.
A. purpose B. desire C. wish D. attempt
23. ----- I am going to see the victim’s brother.
----- I’d rather you _______.
A. didn’t B. don’t C. shouldn’t D. hadn’t
24. If we _______ now to protect the environment, we’ll live to regret it.
A. hadn’t acted B. haven’t acted C. don’t act D. won’t act
