He didn’t makeclear when and where the meeting would be held.A. thisB. thatC. itD. these

问题补充：

He didn’t makeclear 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：it作形式宾语,when and where the meeting would be held作真正的宾语。当复合宾语中的宾语是宾语从句时,往往把宾语放在它的补语的后面,而用先行代词it放在全句谓语动词和宾语补语的中间。放在宾语补语后面的宾语是真正的宾语,放在全句谓语动词和宾语补语中间的it是形式宾语。