Try ___ she might, Sue couldn’t get the door open.
| A．if | B．when | C．since | D．as |
When exposed to stress, in ________ form, all of us react both chemically and physically.
| A．whichever | B．whatever | C．however | D．whenever |
---Why not join us in the game?
--- ________.
| A．Sure，please do | B．No，you do the same |
| C．Oh，that’s all right | D．OK，coming |
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 |