Fill in the following blanks with appropriate prepositions or adverbs. We confirm receipt of your fax ____ the sale to you of 100 tons of groundnuts. We expect to put the deal _____. You will be advised _____ the time when the machines are ready for shipment. The relative L/C will be airmailed soon and you are requested to ship the above lot on the first available steamer _____receipt of our L/C. We have pleasure ____ sending you the attached Order Confirmation No.554,concerning our recent purchase to you of 500 tons of barley. If the quality of your initial consignment proves _______ be satisfactory, we can assure you of repeat orders. We hope to come ____ terms with you about this trial purchase. We appreciate your recent efforts ______ promoting the sale of our products. We enclose order no.1006 and expect delivery within six weeks. We will pay ______ banker's draft on receipt of the shipping documents. If there are any problems ______the delivery, please let us know immediately. We look forward to receiving acknowledgement of our order.