I can well remember that there was once a time ________ I grew crazy about painting.
until B．after C．when D．before
—What are you doing under the table?
—I _____ to find my watch.
| A．tried | B．try | C．am trying | D．have tried |
If it were not for the fact that you _____ ill, I would ask you to do this right now.
| A．were | B．had been | C．are | D．should be |
--- “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 |