_____ that air conditioners cause so much pollution, I would never have bought o
题型：不详难度：来源：
_____ that air conditioners cause so much pollution, I would never have bought one.| A．Had I known | B．I had known | C．Were I to know | D．Did I know |
|
答案
| A |
解析
| 考查虚拟语气。根据句意可知考查与过去事实相反的虚拟语气，从句用had + done，Had I known ="If" I had know，故选A。 |
举一反三
The most important thing ____ when ____an emergency is to stay calm.| A．keep it in mind; deal with | B．keep in mind; dealing with | | C．to keep it in mind; dealing with; | D．to keep in mind; dealing with |
|
Only when the war was over_______ to his hometown.
A. did the young soldier return B the young soldier returned
C. returned the young soldier D the young soldier returned |
Our bad living habits will destroy the earth. Only by changing we live
save the earth.| A．what; can we | B．how; can we | C．where; we can | D．how, we can |
|
_______, and problem will be settled.| A．A bit more effort | B．making a little more effort | | C．If you make a bit more effort | D．there being a little more effort |
|
Out of the crowded bus , who was dressed in a black suit and waved to a woman. | A．a tall man stepped | B．stepped a tall man | | C．did a tall man step | D．did a tall man stepped |
|
最新试题
热门考点