问题

Neither side is prepared to talk to_________unless we can smooththings over between them

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

正确答案是：

同类题型

Once______ in the exam, the students who’vedone it would be punished.

He was caught in the rain, __________ himself catch a cold.

下列各组句子中，加线词的意义和用法相同的一组是

I was doing my homework when suddenly the power ___________ in my neighbourhood.

Some animals ______ the tiger, the lion and the wolf are meat-eaters.