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--Show me your permit, please. --Oh, it's not in my pocket. It . [ ] A.might fal

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--Show me your permit, please. --Oh, it's not in my pocket. It . [ ] A.might fal

——Show me your permit, please.

——Oh, it's not in my pocket. It ________.

[]

A.might fall out

B.could fall out

C.should have fallen out

D.must have fallen out

试题答案

答案:

解析:

must have+过去分词表示推测。

标签:itohnotmyin