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单项选择题
A.engaged to
B.engaged for
C.engaged on
D.engaged in
单项选择题
A.is;are
B.is;hasbeen
C.are;is
D.is;was
单项选择题
A.whichever
B.whomever
C.whatever
D.wherever
单项选择题
A.to arrive
B.arrive
C.arrived
D.from arriving