單項選擇題

I regret（）the trouble I have caused you.

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

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單項選擇題

I must hold（）for any damage which may result from the accidents you have caused.

A.your responsible
B.you responsible
C.you are responsible
D.your are responsible

單項選擇題

I look forward to（）for this at your earliest convenience.

A.having your approval
B.approved by you
C.get your answer
D.know your opinion

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