第二部分英语知识应用（共两节，满分40分）
第一节 单项填空 (共10小题；每小题1分，满分10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 for being late. I should have phoned you earlier.
– _____. I’ve just arrived.
A. That’s no trouble. B. You are welcome. C. That’s all right. D. You can never tell.
22. The fire was finally brought under control, but extensive damage _________.
A. is caused B. was causing C. had caused D. had been caused
23. When and where to build the new factory _____not decided yet .
A. is B. are C. has D. have
24.. _________ we have been classmates for three years, she hasn’t left me much impression, so I can’t remember her after graduation.
A. Since B. Although C. Because D. Unless
