题目内容
—I saw Mr. Smith in the library this morning.
—It ________ be him. He has gone to Yuelu Mountain with his friend.
A.needn’t B.can’t C.must
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题目内容
—I saw Mr. Smith in the library this morning.
—It ________ be him. He has gone to Yuelu Mountain with his friend.
A.needn’t B.can’t C.must