_______he has finished writing the novel is unknown.A．IfB．WhetherC．WhenD．While_刷题宝

题干

_______he has finished writing the novel is unknown.

A．If	B．Whether
C．When	D．While

上一题下一题 0.65难度单项选择更新时间:2017-05-23 03:57:47

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