问题

Wang Lin failed to be admitted by Hong Kong University last year, and only then _______ the importance of English.

A:he finally realized
B:he had realized
C:did he realize
D:had he realized

正确答案是：

同类题型

I’ve phoned her myself for invitation; ________, she won’t come to join my birthday party.

Shall we go out for a walk—Sorry．I’m too busyto forthe moment．

The 2014 Winter Olympics was held in Sochi, in February.

I ____________ my test paper twice, so I believe my answers are all right.

I’m amazed to hear from my school teacher again. _______，it is ten years since we met last.