—I'm going to the USA.
—How long you there?
A. are; staying B. are; stayed C. have; stayed D. did; stay
______ private cars are bringing us convenience, they also cause more traffic accidents and pollution.
| A．While | B．As | C．If | D．Since |
Which do you enjoy ______ your holiday, going abroad or staying at home?
| A．spending | B．to spend | C．being spent | D．spend |
— Have you finished your composition already?
— Yes. I ______ it in twenty minutes.
| A．have finished | B．finished | C．will finish | D．had finished |
The performance supposed to be popular______ to be a great disappointment after it was over.
| A．turned up | B．turned down | C．turned out | D．turned over |
Some pictures of the river brought the days back to the day______ they swam in it.
| A．when | B．that | C．who | D．where |