When if he had any idea what the novel was about, Jack kept silent.He ha

题干

When if he had any idea what the novel was about, Jack kept silent.
He have read it very carefully.

A．asking; needn't	B．asking; shouldn't
C．asked; can’t	D．asked; mustn’t

上一题下一题 0.64难度单项选择更新时间:2013-01-18 03:34:26

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