We were just about ready to leave _____ it started to snow.
| A．when | B．before |
| C．after | D．since |
The general manager thought _______ of these problems before he made the final decision.
| A．a good many | B．a great deal |
| C．lots | D．a plenty |
If only you __________ him what I said! Everything would have been all right.
| A．didn't told | B．hadn't told |
| C．would not tell | D．would have not told |
We didn't know his telephone number, otherwise we _________ him.
| A．would have telephoned | B．must have telephoned |
| C．would telephone | D．had telephoned |
It was essential that the application forms ___________ back before the deadline .
| A．must be sent | B．would be sent |
| C．be sent | D．were sent |
_____________ cease（终止） advertising, prices would be significantly reduced.
| A．Were they to | B．Could they |
| C．If they | D．Would they |