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
These examples, once ___ to his article, will make it sound more reasonable and acceptable.
A．add B．to add C．adding D．added
