We should wear special boots __________ us floating away into the space .
| A．to prevent | B．preventing |
| C．prevent | D．prevented |
— Jane, is this your umbrella?
—No, it’s not _____. I didn’t take one this morning.
A. me B. my C. mine
A： Would you like to go to the concert after supper?
B： I have to look after the twins at home tonight.
| A．That’s great. |
| B．I’m afraid I can’t. |
| C．Sure, please go ahead. |
| D．No, thanks. |
A： Would you mind my smoking here?
B：Look at that sign. It says, “No smoking.”
| A．Never mind. | B．Of course not. |
| C．You’d better not. | D．No, I don’t. |
Our class teacher asked us .
| A．why doesn’t Susan come for the picnic |
| B．why didn’t Susan come for the picnic |
| C．why Susan not come for the picnic |
| D．why Susan didn’t come for the picnic |
A： is it from our college to the underground station?
B： About half an hour’s bus ride. Shall we go there by taxi?
| A．How long | B．How far |
| C．How often | D．How much |