We are sorry ______the trouble the printer has caused you, but we are confident that it can be fixed _____ your complete satisfaction.
We are sorry ______the trouble the printer has caused you, but we are confident that it can be fixed _____ your complete satisfaction.
【正确答案】：for; to
【题目解析】：be sorry for为…感到抱歉；为…感到难过;  to one's satisfaction使某人满意
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