题目内容

Ten percent of the workers in this city ___________now on strike.

A. is
B. are
C. is to be
D. are to be

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You had better _______the water until it has been boiled.

A. not to drink
B. not drink
C. not drunk
D. not drinking

The bomb could be _____ at any time.

A. set about
B. set off
C. set out
D. set on

The play writer and director ________promised to attend our tea party.

A. have
B. has
C. are
D. is

He is getting_________well in his new job.

A. at
B. in
C. on
D. by

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