单项选择题

That is the key()solving the problem.

A.at
B.to
C.for
D.in

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单项选择题

All the leading newspapers()the trade talks between China and the United States.

A.published
B.reported
C.printed
D.announced

单项选择题

I'd rather()than stay.

A.have gone
B.to go
C.went
D.go

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