【題目】—On my way to the bookstore, I saw Mary hanging out with her friends.

—It________be her. She has gone to Beijing.

A.can'tB.mustn'tC.mightD.could

【答案】A

【解析】

句意：——在我去書店的路上，我看見瑪麗和她的朋友們在一起。——不可能是她。她去北京了。

考查情態(tài)動詞辨析。can't不可能；mustn't禁止；might可能，表推測；could能，表能力。分析語意可知，此處表示可能性，根據(jù)“She has gone to Beijing.”可知，不可能是瑪麗，表否定推測。故選A。

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