A、to,onB、for,uponC、forD、in,to,inWe shall be glad if you……

单项选择题International traders often () a longer period for ()of an account.

单项选择题As the only direct steamer which calls () our port once a month has just departed, goods can only be shipped next month.

单项选择题We will draw()you by our documentary draft at sight on collection basis.

单项选择题As the goods are ready for shipment, we ()your L C to be opened immediately.

单项选择题We are glad to send you this introductory letter, hoping that it will be the prelude () mutually beneficial relations between us.

单项选择题Please send us three copies of your latest catalogue () your earliest convenience.

单项选择题Your samples should give us some idea of the colors and quality () the products

单项选择题Please tell us how long this price list () valid.

单项选择题As the brochures you sent us were() damaged in the mail, we would like you to mail us some more.

单项选择题The above information is given confidentially and without responsibility () our part.

单项选择题What quantities of the specified item can you regularly deliver ()short notice?

单项选择题We request you to see to it that L C is opened by cable ()order is placed with us.

单项选择题Please open the Letter of Credit promptly at the contract price, () we cannot apply for export licence

单项选择题We trust that you will be able to accept our offer, which shal() against reply by cable

单项选择题Being specialized () the export of Chinese Arts and Crafts goods,we express our desire to trade with you in this line.