第二部分：英语知识运用(共两节，满分35分)
第一节 单项填空(共15小题；每小题1分，满分15分)
21. _________ caused the accident is still a mystery.
A. How B. What C. That D. Where
22.Don’t worry．It will be two weeks ．the exam takes place
A．since B．after C．before D．when
23. We still remember once _________ round the famous tower when we were young.
A. having taken B. to be taken C. having been taken D. to have taken
24. ---What do you think of his speech at the court?
---Er..., sorry, I ________ about something else.
A. had thought B. thought C. was thinking D. have been thinking
25. Mr. Duncan raised an unnecessary question ________ he then failed to find an answer.[来源 A. to which B. for which C. with which D. by which
26. --- I failed my driving test．
--- ; they say the best drivers always fail the first time．
