All the information offered by you will be kept ____ confidential. in 。 as 。 to 。 with。
We are enclosing a full set of copy documents ______this first consignment referring 。 covering 。 regarding to 。 as for。
Please inform us ____ the supply and demand situation in your country. to 。 of 。 with 。 in。
The offer is firm subject ____ before October 1. for your reply reaches us 。 for your reply reaching us 。 to our receiving your reply 。 to your reply reaching us。
Please send us as soon as possible samples of the following goods _____ listed in your current catalogue. which 。 as 。 what 。 for which。
In your letter of April 10, you did not mention ____ the price of arts & crafts.
