He did’t make clear when and where the meeting would be held.A. thisBthatC. itDone

问题补充：

He did’t make clear when and where the meeting would be held.

A. this

Bthat

C. it

Done

答案：

A. this

B. that

(答案→)C. it

D. one

解析：考查it的用法。 it 作形式宾语，后面when and where引导的从句才是真正的宾语。