— Did you make it at last?
— Yes. But for your help,it _____ a serious loss.
| A. had caused |
B. must have caused |
| C. would have caused |
D. may cause |
--Look at the black clouds. It soon.
--Sure. How I wish we out!
| A．is raining...didn’t come | B．is to rain...won’t start |
| C．will rain...haven’t started | D．is going to rain...hadn’t come |
We don’t allow in the lecture hall, so you are not allowed here.
| A．smoking...smoking | B．to smoke...to smoke |
| C．smoking...to smoke | D．to smoke...smoking |
There is something wrong with my bike, so I’ll get it tomorrow.
| A．repairing | B．being repaired | C．to repair | D．repaired |
The most interesting thing we should pay attention to is the first thing
I have said.
| A．which...that | B．that...which |
| C．which...which | D．that...that |
When first to the market, these products enjoyed great success.
| A．introducing | B．introduced | C．to introduce | D．being introduced |