166.They each _______ a copy of the new physics。　A。 have B。 has C。 having D。 gets

　　解析：该题答案为A。They each不等于each of …， each of这个词组作主语谓语用单数如each of the students hands in their homework，而they each作主语，谓语要随each前面的词来变化。

　　167.Not only ____ this machine but ____ it。　A。 can he run……can he repair B。 can he run……he can repair

　　C。 he can run……he can repair D。 he can run……can he repair

　　解析：该题答案为B，在not only……but (also)句型中，只有but前面的部分倒装，but后面仍是正常语序。

　　168。____ that he went to sleep.A It was until midnight B That was until midnight

　　C It was not until midnight D That was not until midnight解析：该题答案为C。强调until结构时，要将否定词not移到until前。又如：He didn‘t leave until twelve改为It was not until twelve that he left。

　　169。 There are a lot of students ____ in the class room.A talk B talking C talked D to talk

　　解析：该题正确答案为B。 There be句型为倒装句，可换为A lot of students are talking in the class room。又如：There is a lot of noise heard out in the street。

　　170。 While ____my homework， I heard a cry for help.A do B did C doing D having done

　　解析：该题答案为C。该空处省略了I‘m，相当于while I’m doing my home work。如：While playing guitar， he is singing。

　　171。 The bus ____C__ on the road for 2 hours so far。 A。 has stopped B。 stopped C。 has been

　　Are you __A___ the jacket these days? A。 wearing B。 putting on C。 dressing D。 on

　　He __C______ foe 2 hours。 A。 got up B。 has got up C。 has been up

　　You mustn‘t ___B_____ until he comes back。 A。 be away B。 leave C。 be left

　　172。 -These farmers have been to the United States。 -Really ? When _____ there ?

　　A。 will they go B。 did they go C。 do they go D。 have they gone现在完成时与一般过去时容易混淆，就是因为它们所表示的动作都发生在过去，但二者又有区别：一般过去时表示过去某个时间发生的事、存在的状态或经 常发生的动作，说话的侧重点在于陈述一件过去的事情，与现在没有关系;现在完成时表示与现在有关系的发生在过去的动作，它不与表示过去的时间状语(如 yesterday ， last week ， a moment ago等)连用。故9的正确答案为B。

　　173。 His father ______ the Party since 1978.A。 joined B。 has joined C。 was in D。 has been in现在完成时中，非延续性动词不能与for和since引导的表示一段时间的状语连用，通常是用相应的延续性动词来代替。故11的正确答案依次为：D。

　　174。 You must make your new house clean and safe __C_____you move in。 A.because B.when C.before D.until

　　I was_______tired_______I couldn‘t walk on。(A)A.so…that B.too…to C.very…that D.very…to

　　I thought he___D____to see his mother if he time。

　　A.will go…has B.will go …will have C.would go …would have D.would go …had

　　175。 Today the forests have almost gone。 People must ___C____ down too many trees。

　　A。 stop from cutting B。 stop to cut C。 be stopped from cutting D。 be stopped to cut