單項選擇題

He said that he was （）aware of the difficulty of being a father.

A.highly
B.fully
C.soundly
D.firmly

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單項選擇題

Problems may （）

A.rise
B.jump
C.arise
D.lift

單項選擇題

The foreign guests said that they were very happy （）the great changes which had taken place in the village.

A.to
B.for
C.about
D.by