He looks very tired . He ____ to bed too late last night .
| A．must go | B．must have gone | C．could go | D．didn''t go |
__________ there is no law stating how you may dress, not all fashions are respectable.
| A．Because | B．Since | C．While | D．Unless |
Most of the inhabitants (居民) can’t afford to buy houses of their own, because the price is rising ________.
| A．all the way | B．at last |
| C．at the same time | D．in total |
—It’ll take me about two hours to do the work!
—Oh, ! I could do it in half an hour.
| A．come on | B．no way |
| C．no problem | D．don’t mention it |
We should take care of the blind. It is immoral to them.
| A．make room for | B．make fun of |
| C．make sense of | D．make use of |
—Have you ne to the airport yet?
—Right. According to the time table the plane at 9:00.
| A．leaves | B．is leaving |
| C．will be leaving | D．has left |