He didn’t make clear when and where the meeting would be held?A. this B. that C. it D. th

问题补充：

He didn’t make clear when and where the meeting would be held?

A. this

B. that

C. it

D. these

答案：

A. this

B. that

(答案→)C. it

D. these

解析：句意：他没有说清楚什么时间什么地点开会。it做make的形式宾语，when and where the meeting would be held做真正的宾语。