We desire to establish _____ beneficial business relations.
A
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Yourfullcooperationinthisrespectwillbehighly____.
Itisonlyinviewofourlongfriendlybusinessrelationsthatwe____youthisaccommodation.
Wethankyou_____foryoucooperation.
This price is ____ of your 5% commission.
题目：提高质量保证