It is a long time ________ they separated, but it won’t be long ________ they meet again.
| A．since, before | B．after, when | C．since, when | D．after, before |
I can lend you the book________that you can return it to me on time.
| A．if |
| B．unless |
| C．provided |
| D．so |
You should know the traffic rule now, for you have had me________so many times.
| A．explained |
| B．to explain |
| C．explaining |
| D．explain |
—You should say sorry to him, I think.
—________！ It's his fault.
| A．Impossible |
| B．No way |
| C．Not possible |
| D．OK |
Which one do you prefer________， the red one or the blue one?
| A．better |
| B．more |
| C．best |
| D．/ |
Speak slowly so that everybody can________you.
| A．catch |
| B．follow |
| C．listen to |
| D．listen |