Bring the flowers into a warm room __________ they'll soon open.
| A．or |
| B．and |
| C．but |
| D．for |
--- “Where have you been?”
--- “I got caught in traffic; otherwise _____ sooner.”
| A．I would be here | B．I have been here |
| C．I had been here | D．I would have been here |
We _____ the work on time without your help.
| A．hadn’t had finished | B．didn’t have finished |
| C．couldn’t have finished | D．can’t have finished |
You _____ such a serious mistake if you had followed his advice.
| A．may not make | B．might not make |
| C．shouldn’t have made | D．might not have made |
If only I _____ my watch!
| A．hadn’t lost | B．haven’t lost | C．didn’t lost | D．don’t lose |
What should we do if it _____ tomorrow?
| A．should snow | B．would snow | C．snow | D．will snow |