Since the forest has been destroyed by a big fire, a large ______ of trees ______ to be planted on the mountain．
| A．number; has | B．amount; has |
| C．quantity; have | D．sum; have |
He lifted the receiver as soon as the telephone rang but it on the table at once.
A. lay B .lied C laid D lain
smoking is a bad habit. You should it.
| A．throw | B．get away with | C．get rid of | D．throw away |
It is thein this country to go out and pick flowers on the first day of the spring.
| A．use | B．custom | C．habit | D．normal |
Stay awake！You should know that it ________to sleep in class.
| A．doesn’t permit | B．is not permitted |
| C．will not be permitted | D．was not permitted |
The problem in today’s parenting environment is ____________ many believe it is their job to solve all their children’s problems.
| A．who | B．that | C．which | D．What |