(2011·江西高考)It ________be the postman at ...

(2011·江西高考)It ________be the postman at the door.It's only six o'clock.

A．mustn't B．can't

C．won't D．needn't

B 【解析】选B 考查情态动词。句意：门口不可能是邮递员，(现在)才六点钟。对现在的否定推测，由It's only six o'clock.分析可知应用can't(不可能)。mustn't“禁止”， won't“不会”，needn't“不必”，均不合句意。

考点分析：

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