So, ________ the government has a good system of control or can educate the people, the forests will slowly disappear.
A. as long as B. when C. unless D. every time
—I can’t stand him ________ all the time.
—Is that why you refused ________ to him?
A. interrupting; speaking B. interrupting; to speak
C. to interrupt; to speak D. to interrupt; speaking
________ difficulties we may come across, we’ll help one another to overcome them.
A. Whatever B. Whenever C. Wherever D. However
— I have no question at the moment, sir.
— Don’t ________ to call me if you need a hand. I’ll help you.
A. wait B. hesitate C. delay D. abandon
Teenagers ________ their health because they often expose themselves to so many electric products.
A. have damaged B. damage C. are damaging D. will damage
To pick up as soon as possible, Tom was advised to do exercise ________ a change in diet.
A. in addition to B. in favor of C. in response to D. in return for
