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

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

A. this                    B. that                        C. it                              D. these

试题答案

C

解析：当动词不定式或句子做宾语并且后面有宾语不足语时，这时只能用it代替动词不定式或句子。make sth clear讲清楚，说明白。