题目内容

【题目】--She looks very happy. She ________have passed the exam.

--I think so. It’s not difficult after all.

A. should B. could C. might D. must

【答案】D

【解析】

试题分析：考查情态动词。本句考查情态动词表猜测。情态动词表猜测有以下情况：表肯定猜测用must、表否定推测用can’t/couldn’t；表可能用may/might;疑问句中表可能用can/could；表应该用should。本句中根据she looks very happy可知她看起来很开心，所以下文是很肯定的猜测，她肯定通过了考试。故选D。

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