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– 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.must, may notB.will, won’tC.may, mustn’tD.may, can’t
D
“有人敲门,会是谁呢?是邮差吗?不,不可能是他,才7点,太早了。”may用于推测,用在疑问句和否定句中表示“可能,可以”,will 表示“将要”,而must 表示“必须,肯定”的意思,故第一空用may;第二空can’t 表示否定的推测“肯定不是,一定不是”,而mustn’t表示不准的意思,不适合。所以正确答案是D。
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