题目内容

---Hi, Lucy.Have you heard of any good news about Frank recently?
---Yeah.She ____ have done better.She has been admitted to one of the top-ten universities in the States.

A.shouldn’t B.wouldn’t C.needn’t D.couldn’t 

D

解析考查情态动词。couldn't + 比较级,意思为“不能再...了”,即表示最高级“非常...”或“最...”的意思,根据句意选D。

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