1．(2012年高考江西卷)We ________ have bought so much food now that Suzie won't be with us for dinner.
A．may not B．needn't
C．can't D．mustn't
解析：句意：既然Suzie不和我们共进晚餐，我们本不必买那么多的食物。本题考查虚拟语气。根据句意可知这里表示与过去事实相反的假设，needn't have done表示本不需要做某事。A：可能不；C：不可能；D：禁止，不能与have done sth.连用。
答案：B
2．(2012年高考湖南卷)Sorry，I am too busy now.If I ________ time，I would certainly go for an outing with you.
A．have had B．had had
C．have D．had
解析：句意：对不起，我现在太忙了。如果我有时间，我一定会跟你去郊游。考查虚拟语气。根据第一句可知设空处是对现在的假设，故if从句谓语动词为过去式。
答案：D
3．(2011年高考江苏卷)—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
