我来答吧,还是讲评过的东西:27. Tony is a quiet boy and he is accustomed ______ at meals, which is always appreciated.A. not to talk B. to not talk C. to not talking D. not to talking选C is accustomed to,to是介词,后接动名词,动名词否定式是:not doing(前加not,同不定式和分词的否定式一样在前加not)29. Mike and Bob both did very well in the competition, but the former is ______ of the two.A. more talented B. the most talented C. most talented D. the more talented选D, 两者中较聪明那个,the特指。30. He must have been punished by his parents yesterday for what he had done, ______?A. mustn’t he B. wasn’t he C. didn’t he D. hadn’t he选B,must have done表示对过去的推测,反义疑问句用一般过去时,但不能用must本身,此处是被动语态,即He was punished yesterday, wasn’t he ? ( 主动语态时用C那种 ) 32. ______ wondering which way to take, the little boy behaved like a real gentleman who comforted his sister from time to time.A. Leaving B. Having left C. To leave D. Left 选D leave sb wondering,让某人想/让某人困惑,被动为sb be left wondering某人在想,依此可知,the little boy 与leave的关系是被动,因此选D33. Shanghai now increases the supply of smaller houses, ______ to help low–income families to buy houses of their own.A. aimed B. being aimed C. aiming D. having aimed选C Shanghai与aim构成主动关系,几乎同时发生,故选aiming,having aimed表动作发生在谓语之前。34. Tropical rainforests ______ down and burned at such a speed that they will disappear from the earth in the near future.A. are being cut B. are cut C. cut D. had been cut选A 当前情况,持续的,被动地,故用现在进行时的被动语态。35.______you can’t make great progress in the language learning has something to do with your vocabulary.A. Whether B. That C. If D. What选B,(先补充:空白在句首)you can’t make great progress in the language learning 成分完整,是一个整体,在句中作主语,必须由that来组织起来才能构成主语从句。that没意思没名分不能省。(名分即成分)这是that引导主语从句、表语从句和同位语从句时的“三不”原则。36. You are sure to be successful in the job market ______ you make yourself better known to the interviewer.A. even if B. though C. until D. once选D,关键要理解make yourself better known ,即是make oneself done, "一旦你让面试官更了解你自己"。37. Jimmy came back early last night. It was not yet eight o’clock ______ he got home.A. before B. that C. when D. until选C,It指时间代词,(最基本的那种代词)并不是形式主语或强调句里的那个It ,很多人误认为是强调句,选that是错的。when 引导时间状语从句。本题稍作改动,答案就不同:如Jimmy came back early last night. It was at eight o'clock ______ he got home.选that(强调句)Jimmy came back late last night.It was not until eleven o'clock ______ he got home.选that(强调句)Jimmy came back late last night. He didn't get home ______ it was eleven o'clock(选until)38. Many skilled workers were organized to clear away ______ remained of the World Expo site.A. what B. when C. which D. where选A 清理世博会留下来的东西,what代词,代留下来的东西。BD是副词先排除,which限定的“哪一个”39. The old man took the policemen back to the same place ______ he had witnessed the robbery.A. that B. where C. as D. when 选B,即为 in the same place, he had witnessed the robbery. 先行词是地点状语,用where代之。40. People hope the new measures ______ house prices, taken by the government, will succeed.A. to control B. controlled C. controlling D. having controlled选A 全句即为People hope the new measures taken by the government to house prices will succeed,实则为拆散了take measures to do这个短语,但万变不离其形。整句意思:人们希望政府所采取的旨在调控房价的新措施将会取得成功。此句很多人误以为是hope sb to do sth,可是没有这个表达哦,选对也是撞对而已,幸哉幸哉!!