Aunt Mary is crazy about shopping. She must be snapping up the bargains in the d
题型：不详难度：来源：
Aunt Mary is crazy about shopping. She must be snapping up the bargains in the department store during such a sale, ?| A．mustn’t she? | B．isn’t she | C．needn’t she | D．doesn’t she |
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答案
| B |
解析
| 当must用来表示对现在的情况进行推测时，问句通常要根据must后面的动词采用相应的形式。Must后的动词时be，主语she是单数第三人称，故选B。 |
举一反三
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