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Your（） close cooperation this respect will be highly appreciated.

Your（） close cooperation this respect will be highly appreciated.
A、to
B、of
C、in
D、about
正确答案：C

上一条：We shall register a claim（） the insurance company（） the goods damaged during transit.

下一条：We are in receipt of your enquiry（） August 15th， 2010， the contents of which have beenduly noted.