— There’s somebody at the door. Who ______ it be? Is it the postman ?
—No, it ______ be him. It’s just seven o’clock. It’s too early.
A.may, can’tB.will, won’tC.may, mustn’t D.must, may not
A

試題分析:句意:門(mén)口有個(gè)人,會(huì)是誰(shuí)呢?是郵遞員嗎?不,他不可能是郵遞員。時(shí)間才剛七點(diǎn),天太早了。may表示“可能”,can表示肯定猜測(cè),而否定猜測(cè)用can’t,won’t表示將來(lái)不,mustn’t表示禁止,絕對(duì)不能,may not表示可能不;故選A。
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