题目内容

Mr Black   be at home because she called me from England just now.
A．mustn'tB．isn't able toC．can'tD．may not
C

试题分析：此题重点考查情态动词的用法，句意：“布莱克先生不可能在家，因为刚才他从英国给我打电话了”这是肯定的猜测，“肯定不可能”因此用can’t，其余答案不合题意，故选C
点评：学生在平时牢牢记住这些情态动词的用法，can 和 could 用于表示"可能"或"预测；may 和 might 用于表示"事实上的可能性"或"预测"；will 和 would 用于表示"预测"
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