Someoneisknockingatthedoor.Who

更新 2022-09-03
科目英语
题型单选题
难度中等
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挑错有奖

---Someone is knocking at the door. Who may it be?
---It ______ be Tom. He is still in the school.

A．can’t

B．mustn’t

C．couldn’t

D．may not

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