—WhereisJohn?—He_____inthelibraryA.shouldbeB.mustbeC.canbeD.musthavebe

发布时间:2020-08-04 16:16:15

— Where is John?— He _____ in the libraryA.should beB.must beC.can beD.must have been

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B解析must do表示对现在的事实进行推测。
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