题目内容
12.---Look!It ________be Mrs.Smith.---It _________be her.She has just gone to Shanghai.( )
| A. | can; mustn't | B. | must; can't | C. | must; mustn't | D. | can't; must |
分析 --看!那一定是Smith夫人.
--不可能是她.她刚刚去上海了.
解答 答案:B.
can可能;must一定;mustn't不可以;can't不可能.根据She has just gone to Shanghai,可知她刚刚去上海了,所以那不可能是Smith夫人,所以句子第二个空用can't,选项ACD都不是can't,排除,所以只能选B,must是一种肯定的推测.
点评 本题考查了情态动词的用法.解答时注意理解句意以及所给选项的意思并作出正确选择.
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