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Today is Wednesday. He _______ be at home. He _____ be at school.
A.can’t, canB.can’t, mustC.mustn’t, mustD.mustn’t, can
B
考查情态动词表推测的用法。句意“今天是周三,他不可能在家。他一定在学校。”can’t表否定的推测,意为“不可能”;must表示肯定的推测,意为“一定”;而mustn’t不能表示推测。故选B。
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