______it will do us harm or good remains to be seen.A、IfB、WhetherC、WhyD、HowB

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问题 ______it will do us harm or good remains to be seen.

选项 A、If
B、Whether
C、Why
D、How

答案 B

解析这是一道语法题，考点是疑问副词Whether引导的主语从句的用法。

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