题目内容

It is everybody's () to keep the city clean.

A. matter
B. affair
C. business
D. thing

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The manager considers Kate ()the most productive employee in the team

A. about
B. as if
C. for
D. to be

Julio ()be cold. He came from Brazil, a warm country

A. might
B. can't
C. shouldn't
D. would rather

We ()connect to the Internet yesterday due to a power failure

A. shouldn't
B. couldn't
C. may
D. would rather

Guests ()sign in at the front desk to enter the building

A. can
B. may not
C. must
D. used to

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