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單項(xiàng)選擇題

This is the problem（）we have no good solution as yet.

A.to that
B.which
C.for which
D.to which

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單項(xiàng)選擇題

Last month, he paid a visit to the village（）he had once worked for five years.

A.where
B.which
C.that
D.in that

單項(xiàng)選擇題

Mr. Liu,（）at university in Changchun, works at Changhou Company now.

A.whose wife I met
B.I met whose wife
C.I met his wife
D.his wife I met