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- Whose is this blue bike?
-It ________ be Mary’s. Her bike is black and white.
A.mustB.can’tC.can D.mustn’t
B

试题分析:must必须,一定;can’t不能;can能,能够;mustn’t禁止。句意:这辆蓝色的自行车是谁的?——联系下文他的自行车是黑白色的。可知不可能是玛丽的。故选B。
点评:情态动词的考查是初中英语考查的重点,平时学习中一定要熟记这些词的基本词义及用法上的不同,注意其用法及在句子中表达语气的不同。考试中结合语境选择合适答案。
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