It remains a questionwe can finish the project in such a short time.A. whatB. thatC. how D

问题补充：

It remains a questionwe can finish the project in such a short time.

A. what

B. that

C. how

D. when

答案：

A. what

B. that

(答案→)C. how

D. when

解析：句意：我们如何在这么短的时间完成这项任务仍然是一个问题。这里是it是形式主语，how引导的真正的主语从句，它在句中作状语。故选C。

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