Why did you keep it a secret from me ? I ____ about it .
| A．should be told | B．ought to have been told |
| C．should have told | D．ought to be told |
Some people waste a lot of food ____ others haven't enough to eat.
| A．once | B．when | C．as | D．while |
The new tax would force companies to __________energy-saving measures.
| A．adapt | B．adopt | C．adjust | D．attach |
It is generally believed that constant reading and comprehending can ______ our mental ability of comprehension while physical exercise can help build up our body.
| A．stress | B．effect | C．strengthen | D．decide |
Shortly after the accident two ____ policemen were sent to the spot to keep order.
| A．score of | B．scores | C．score | D．scores of |
Once you have become ______to cigarette smoking or alcohol, it is hard to _______it even though you try hard.
A, used; get away with B. addicted; get rid of
C. adapted; get down to D. accustomed; get off