It is so cold that you can’t go outside _____ fully covered in thick clothes.
A. if B. unless C. once D. when
_____ Li Bai, a great Chinese poet, was born is known to the public, but some won’t accept it.
A. That B. Why C. Where D. How
Much time _____ sitting at a desk, office workers are generally troubled by health problems.
A. being spent B. having spent
C. spent D. spending
—Jim, can you work this Sunday?
—________? I’ve been working for two weeks on end.
A. Why me B. Why not
C. What if D. So what
Schools should be lively places where individuals are encouraged to _____ to their greatest potential.
A. accelerate B. improve
C. perform D. develop
The number of smokers, _____ is reported, has dropped by 17 percent in just one year.
A. it B. which C. what D. as
