A. mustn't B. won't C. mightn't D. shouldn't

答案 B

解析：考查情态动词的用法。句意为"现在一些年轻人就是不愿意走出家门接触真正的世界。"mustn't禁止，不允许；won't不愿意，就是不，偏不，具有主观性；mightn't可能不；shouldn't不应该。根据句意选B。

8.（2011江苏卷,34）

--I left my handbag on the train, but luckily someone gave it to a railway official.

--How unbelievable to get it back! I mean, someone ______ it.

A. will have stolen B. might have stolen C. should have stolen D. must have stolen

答案 B

解析：考查虚拟语气的用法。句意为"--我把我的手提包落在火车上了。但幸运的是，有人拾到交给了铁路部门。--失而复得，简直难以置信！我是说，本来可能有人会偷了去。"will have done将来可以完成，must have done一定做过某事，表示对过去事情的肯定推测，都与题意不符。should have done本来应该做某事，而实际没做，这就意味着希望有人偷包。might have stolen 过去可能做过，语气比较婉转或不肯定，根据句意选B。

9.（2011福建卷,25）

--Shall I inform him of the change of the schedule right now?

--I am afraid you ______, in case he comes late for the meeting .

A.will B.must C.may D.can

答案 B

解析：考查情态动词的用法。句意为"--需要我现在就通知他计划有变吗？--恐怕你得这样做，以防他开会迟到。"must (表示必要、命令或强制)必须,得。根据后半句，选B。

10.（2011福建卷,34）

--Pity you missed the lecture on nuclear pollution.

--I ______ it, but I was busy preparing for a job interview.

A.attended B.had attended C.would attend D.would have attended

答案 D

解析：考查虚拟语气的用法。句意为"--真可惜你错过了那场有关核污染的讲座。--我本可以去听的，但我当时忙于工作面试。"对过去的虚拟，用主语+should / would / could / might + have done表达，故选D。

11.（2011安徽卷, 26）

--What do you think of store shopping in the future?

--Personally, I think it will exist along with home shopping but _____.

A. will never replace B. would never replace

C. will never be replaced D. would never be replaced

答案 C

解析：考查情态动词的用法。句意为"--你对将来的商店购物怎么看？--我个人认为会与在家购物并存，但商店购物不会被取代。"根据I think it will exist along with homeshopping，排除虚拟的选项D，这是表示将来的时间，考虑到被动语态，选C。

12.(2011浙江卷,11)

--How's your new babysitter?

--We ______ ask for a better one. All our kids love her so much.

A. should B.might C. mustn't D. couldn't

答案 D

解析：考查情态动词的用法。句意为"--你的新保姆怎么样？--找不到更好的了。我们的孩子们