题目内容
—Listen! Someone is knocking at the door. Who can it be?
—It _______ be Tom. He said he would visit me this evening.
A. can’t B. need C. must D. mustn’t
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题目内容
—Listen! Someone is knocking at the door. Who can it be?
—It _______ be Tom. He said he would visit me this evening.
A. can’t B. need C. must D. mustn’t