They __________ each other for more than 5 years.
A. know B. knew
C. will know D. have known
—Where is Miss Wang now?
—Look, there she is! She __________ with many old people.
A. talks B. talked
C. is talking D. has talked
The singer __________ in London in 2010.
A. lives B. lived
C. is livingD. will live
We’d better __________ some food now.
A. buy B. bought
C. to buyD. buying
Mr. White is fixing his computer because there is __________ wrong with it.
A. nothing B. anything
C. something D. everything
—Must I sweep the floor now, Miss Jackson?
—No, you __________. You can do your homework first.
A. can’t B. mustn’t
C. needn’tD. shouldn’t