He didn’t make clear why he was late again.A. itB. thatC. thisD. those

问题补充：

He didn’t make clear why he was late again.

A. it

B. that

C. this

D. those

答案：

(答案→)A. it

B. that

C. this

D. those

解析：这题考查的是it做形式宾语，why引导的从句是真正的宾语从句，句意是：他没有说明他为什么又迟到了。选A。