I think that something has to be done to stop the air from being polluted, ______ ?
| A．doesn't it | B．don’t I | C．don't they | D．haven't they |
You are not________to drive after drinking.
| A．agreed |
| B．permitted |
| C．offered |
| D．hoped |
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．/ |