——Showmeyourpermit,please.——Oh,it'snotinmypocket.It________.A.might

发布时间：2020-08-07 03:45:10

——Show me your permit, please.——Oh, it's not in my pocket. It ________.A.might fall outB.could fall outC.should have fallen outD.must have fallen out

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D解析must have+过去分词表示推测。
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