He observed a stranger __________ around the store at midnight.
A, wandering B. to wander
C. wander D. to be wandering
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 |
Environmental pollution is _____ the forest’s dying
| A．leading in | B．resulting in | C．putting in | D．contributing in |