11. ---Will you please show me how to operate the new machine?

　　---Sure. It’s a piece of cake. Now let me tell you ____ to do first. 

　　A. what 

　　B. how 

　　C. whether 

　　D. which

　　解析：whether是否，which哪一个，与题意不符合，而如果用how,do 后面应该有宾语。how to do it.答案为A，what to do first 首先做什么。

　　12. ---My trousers are______ .

　　---I'll buy you a new pair.

　　A. wore out 

　　B. worn out 

　　C. wearing out 

　　D. sold out

　　解析：wear out 穿坏，sell out卖完。裤子是被穿坏，而不是主动的，所以是被动语态，答案是B。

　　13. ---What do you think of these two books?

　　---_____ of them are interesting. And I've read them several times. 

　　A. Both 

　　B. Neither 

　　C. None 

　　D. Either

　　解析：根据题意，是两本书，both“两者都”,neither"两者都不" ,none"一个也没有", either"两者中任何一个"答案是A。

　　14. ---The artist has got _____ much work to do that he hardly has time to help his wife with the housework.

　　---That‟s true. Even on Sundays he is busy with his work. 

　　A. too 

　　B. so 

　　C. very 

　　D. such

　　解析：本题是考so ...that和such ....that的用法。such是修饰名词，但是如果名词前有many ,much ,little,few等修饰词，则用so 代替such.答案为B。

　　15. ---How long ____ you ____a fever? 

　　---Ever since last night.

　　A. have, got 

　　B. have, had 

　　C. have, caught 

　　D. did, have

　　解析：根据后面的since我们可以判断要用完成时。而get,catch等瞬间动词在完成时中不能与for,since引导的时间状语连用，答案是B.

　　16. ---I think he lives _____ No.386 West St.

　　---Are you sure _____ that? You‟d better make sure.

　　A. at, / 

　　B. in, of 

　　C. in, about 

　　D. at, of

　　解析：live in "居住"后接大地点。live at "居住"后面接具体的地点。be sure of /be sure about 确信，固定用法。表示对什么有把握。答案为D。

　　17. ---The rain came to a stop the night before. The fields are still full of water. 

　　---It _____ for nearly a week.

　　A. has rained 

　　B. had rained 

　　C. would rain 

　　D. was raining

　　解析：came to a stop“停止”the night before"前一个晚上"for+一段时间用于完成时，而came 表明是过去时，所以后面用过去完成时。答案为B。

　　18. ---He seems _____ ill. Shall we take him to the hospital right now? 

　　---I don‟t think it matters. Maybe he's caught a bit of a cold.

　　A. terrible 

　　B. terribly 

　　C. even 

　　D. to be terrible

　　解析：seem+形容词 “好像是”ill “病了”用副词修饰。答案为B. even修饰形容词/副词比较级。

　　19. ---Would you like ___ some fruit?

　　---No thanks. I don't feel like _____ anything now.

　　A. to have, to eat 

　　B. having, to eat 

　　C. having, eating 

　　D. to have, eating 

　　解析：would you like to do sth.委婉询问对方的意愿“是否想要做什么....”可以排除B.C .而feel like +名词/动名词，表示“觉得好像....” 答案为D。

　　20. ---This is really a wonderful party with interesting people and great food. 

　　---I'm glad you are _____.

　　A. liking it 

　　B. enjoying yourself 

　　C. at the party 

　　D. are loving

　　解析：enjoy yourself "玩得高兴" 表示感情的love,like 一般不用于进行时。C与题意不符合。答案是B。