问题详情:
–With the failure of the experiment, we have reached a dead end.
--Cheer up! Many good things would never have happened if the bad events first.
A. don’t happen B. didn’t happen C. hadn’t happened D. haven’t happened
【回答】
C
知识点:动词时态与语态
题型:选择题
问题详情:
–With the failure of the experiment, we have reached a dead end.
--Cheer up! Many good things would never have happened if the bad events first.
A. don’t happen B. didn’t happen C. hadn’t happened D. haven’t happened
【回答】
C
知识点:动词时态与语态
题型:选择题