When Lincoln was young , he helped his father ___ the farm.
| A．in | B．on | C．at | D．for |
She told Tom ________ make the same mistake again.
| A．he can’t | B．don’t to | C．to not | D．not to |
----Smoking is bad for your health.
----Yes, I know. But I simply can’t ______.
| A．give it up | B．give it in | C．give it out | D．give it away |
The old temple _______ roof was damaged in storm is now under repair.
| A．where | B．which | C．its | D．whose |
Time should be made full use of _________ ourselves.
| A．improving | B．to improve | C．for improving | D．improve |
Electricity ,like other forms of_________ ,has greatly increased in price.
| A．strength | B．force | C．power | D．energy |