单项选择题

He （）me that Dr.Black would come.

A.ensured
B.assured
C.insured
D.secured

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单项选择题

–Thanks for helping me carry the case.
–（）.

A.My pleasure.
B.Never mind .
C.Quite right.
D.Don’t thank me.

单项选择题

A special committee has been（）to examine the details of the suggestion.

A.set up
B.set out
C.set down
D.set aside