. --- May I play computer games now, mum?
--- No, you _______. You haven’t finished your homework yet.
| A．don’t | B．needn’t | C．can’t | D．may not |
The flight to Guangzhou had to be because of the heavy snow.
| A．put up | B．put off | C．put away | D．put down |
-Sandy is upset now. Why don’t we ?
-That’s a good idea.
| A．cheer her up | B．wake her up | C．pick her up | D．make her up |
You stand in line while waiting for the bus.
| A．mustn’t | B．can’t | C．are supposed to | D．don’t |
By the time he arrived at the airport, the plane .
| A．has taken off | B．was taking off | C．would take off | D．had taken off |
The boy was seen on the sports ground.
| A．to play | B．play | C．played | D．to playing |