I think I can fix it tomorrow. __________, you will have to wait till Friday.
| A．If possible | B．If ever | C．If so | D．If not |
I was about to go out ______ the telephone rang.
| A．when | B．suddenly |
| C．as soon as | D．directly |
We were swimming in the lake _______ the storm started.
| A．when | B．suddenly |
| C．until | D．before |
She was walking down the road _______ she heard someone shouting for help.
| A．when | B．suddenly |
| C．until | D．before |
The fire went on for quite some time _______ it was brought under control.
| A．when | B．since |
| C．after | D．before |
He made a mistake, but then he corrected the situation _______ it got worse.
| A．until | B．when |
| C．before | D．as |