He did the right thing ___ for some fresh air even in cold winter.
| A．to keep the chidlren from going out | B．to prevent the childern from going out |
| C．to keep the children going out | D．to prevent the children going out |
In the past ten years, Government has ____ the price of certain drugs for some 11 times.
| A．dropped | B．reduced | C．lowed | D．decreased |
We need to ____ our active vocabulary step by step.
| A．grow | B．add | C．develop | D．raise |
The young woman walking on the street looked nice, so Vince ___ her a lift.
| A．shared | B．took | C．gave | D．put |
My son John asked me to ___ him off at school on my way to work because it was raining.
| A．take | B．drop | C．put | D．cut |
—I am sorry to have __ too much of your time. —That's OK, and I am glad to help you.
| A．taken up | B．taken on | C．taken off | D．taken in |