Leaves are found on all kinds of trees, but they differ greatly __ size and shape.
| A．on | B．from | C．by | D．in |
Jack, try to learn some relaxation exercises and do them ______ you feel stressed.
| A．for every time | B．every time | C．by the time | D．some time |
It is _____ world of wonders, ______ world where anything can happen.
| A．a; the | B．a; a | C．the; a | D．/; / |
A study shows that students living in non-smoking dormitories are less likely to ________ the habit of smoking.
| A．pick up | B．turn up | C．draw up |
D．make up |
As we all know, ______ medical examination will help us find out health problems as early as possible.
| A．common | B．general | C．regular | D．normal |
Ann ______ here any more．She left last month.
| A．won’t work | B．doesn’t work | C．hasn’t worked | D．isn’t working |