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【題目】 She ____ have left school, for her bike is still here.

A. can’t B. mustn’t C. needn’t D. shouldn’t

【答案】A

【解析】

試題分析：考查情態(tài)動詞。A. can’t 不可能（常用于猜測）；B. mustn’t禁止（命令性的強制）；C. needn’t不需要；D. shouldn’t不應該。根據(jù)句意她不能離開學校，因為她的自行車還在這兒，這里表示對這個情況的一種揣測，故選A。

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