21. The field research will take Joan and Paul about five months; it will be a long time _________ we meet them again. (2007安徽卷)

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

【答案】B。

【考点】考查时间状语从句用法。

【解析】before引导时间状语从句。It will be a long time before…的意思是“要过很久才会……”，如：It will be a long time before we finish this dictionary. 我们需要很长的时间才能把这部词典编完。 It was a long time before I got to sleep again. 过了好久我才又睡着。

22. Little _________ that we were watching his every move, so he seemed to be going his own way in this business. (2007安徽卷)

A. he realized                              B. he didn’t realize

C. didn’t he realize                     D. did he realize

【答案】D。

【考点】考查倒装句式用法。

【解析】由于little含有否定意味，所以当它置于句首时，其后要用倒装句式，又如：Little did they know they were to be reunited ten years later. 他们简直想不到10年后竟又能团聚。

23. The teacher _________ have thought Johnson was worth it or she wouldn’t have wasted time on him, I suppose. (2007安徽卷)

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

【答案】D。

【考点】考查情态动词的用法。

【解析】“must + have + 过去分词”表示对过去情况的肯定推测。句意为：我想，老师一定认为约翰逊是值得教的，要不然她就不会在他身上浪费时间了。

24. — Was Martin sorry for what he’d done?

— _________. It was just like him! (2007安徽卷)

A. Never mind  B. All right         C. Not really      D. Not surprisingly

【答案】C。

【考点】考查交际口语。

【解析】not really为口语惯用语，其意为“不很……”。注意其后语境：It was just like him! 他就是那个样子。

25. In my opinion, life in the twenty-first century is much easier than _________. (2007安徽卷)

A. that used to be                        B. it is used to

C. it was used to                         D. it used to be

【答案】D。

【考点】考查固定用法。

【解析】句子的意思是将现在的生活与过去的生活相比较，所以应用used to be结构，故可排除B和C；由于用于指代life的代词应用it而不是that，故选D。

26. They became friends again that day. Until then, they _________ to each other for nearly two years. (2007安徽卷)

A. didn’t speak                             B. hadn’t spoken   

C. haven’t spoken                       D. haven’t been speaking

【答案】B。

【考点】考查动词时态。

【解析】由于他们再次成为朋友发生在过去(因为became用的是一般过去时)，这就说明他们差不多有两年没说过话属于“过去的过去”，所以要用过去完成时。

27. — Didn’t you have a good time at the party?

— Of course I did. As a matter of fact, I had such fun that time seemed to _________ so quickly. (2007安徽卷)

A. go by             B. go away        C. go out            D. go over

【答案】A。

【考点】考查短语动词的用法。

【解析】go by的意思是“(时间、机会等)过去”。又如：Two years went by. 两年过去了。He let the chance go by. 他错过了机会。

28. The school’s music group will be giving a big show tomorrow night and two _________ on the weekend. (2007安徽卷)

A. more             B. other              C. else                D. another

【答案】A。

【考点】考查不定代词的辨析与用法。

【解析】two more的意思是“另外两场”。more用于数词后，表示数量的增加，又如：Three more of the missing climbers have been found. 失踪的登山者又找到了3个。

29. John received an invitation to dinner, and with his work _________, he gladly accepted it. (2007安徽卷)

A. finished        B. finishing       C. having finished D. was finished

【答案】A。

【考点】考查非谓语动词的语态。

【解析】因“工作”与“完成”之间为被动关系，故finish要用过去分词。

30. — Robert is indeed a wise man.

— Oh, yes. How often I have regretted _________ his advice! (2007安徽卷)

A. to take           B. taking            C. not to take     D. not taking

【答案】D(http://ask.hxen.com/)。

【考点】考查非谓语动词的用法。

【解析】表示对所发生的情况表示遗憾或后悔，动词regret后习惯上要用动名词，不用不定式，因此可排除A和C。再根据句意，此处的动名词应用否定式，故选D不选B。