—Why can't I smoke here?
—At no time__________ in the meeting-room
| A．is smoking permitted | B．smoking is permitted |
| C．smoking is it permitted | D．does smoking permit |
We are proud of our hometown, which isin coal and natural crystal（水晶石）.
| A．abundant | B．universal | C．remote | D．autonomous |
However much you have done, you ought tothe help you’ve received from others.
| A．donate | B．acknowledge | C．conduct | D．guarantee |
The girls in the photograph are twins,is my classmate in high school.
| A．the taller of them. | B．the taller of whom. |
| C．the tallest of that | D．the tallest of who |
I have made greater progress in English, and my teacher inspired me to keep it.
| A．away | B．off | C．back | D．up |
I’m concerned, the computer you want is not very expensive and you can afford it.
| A．As far as | B．As long as | C．As much as | D．As well as |