Police are now searching for a woman who is reported to ____ since the flood hit the area last Friday.
A. have been missing B. have got lost C. be missing D. get lost
I just wonder ____ that makes him so excited.
A. why it does B. what he does C. how it is D. what it is
How can you expect to learn anything ____ you never listen?
A. in case B. even if C. unless D. when
–May I smoke here ?
- If you ____, choose a seat in the smoking section.
A. should B.could C. may D. must
Five people won the “China’s Green Figure”award, a title ____ to ordinary people their contributions to environmental protection.
A.being given B. is given C. given D. was given
Although the causes of cancer ____, we do not yet have any practical way to prevent it.
A. are being uncovered B. have been uncovering
C. are uncovering D. have uncovered
