A、atB、uponC、byD、afterPayments should be made ( )sight d……

单项选择题Your letter has () our careful attention.

单项选择题Mr. Brown inform. us ()you are exporters of cotton bed sheets.

单项选择题The goods you made according to the sample given are ()your favor.

单项选择题Many reports have been received from our ()agents in Korea that there are very heavy demands () the devices.

单项选择题We would be very pleased to be of service () you.

单项选择题As （）machine tools，we regret to （）that we are not able to supply for the time being.

A、regarded,say
B、regards,saying
C、regards,say
D、regarded,inform

单项选择题() please find a price list of our new products.

单项选择题We shall do our best to () your requirements.

单项选择题Each bank is () annually by a certified public accountant.

单项选择题Mr. Brown will get ()touch with you.

单项选择题We introduce ourselves () importers and exporters of light industrial (), having many years experience in this line of business.

单项选择题We would be only ()glad to make offers on RMB basis.

单项选择题It is said that your firm are in the market () textiles.

单项选择题We are already represented by our sole agent in your city for the ()of our Enamelware.

单项选择题Please mark the bales with our initials SCC () a diamond.