We are waiting ______ your reply ______ our letter.

We are pleased to say that we are ______ to supply you ______ the goods you want.

______, we are airmailing you our latest quotation-sheet.

If we had received your L/C, we ______ shipment.

Should your price ______ reasonable, we will place an order ______ you.

We have received your letter of September 12, ______ we are glad to know that you are interested in our electric heaters.

We are ______ to have your enquiry for Sewing Machines.

We have to point out that the postponement of the fulfillment of the contract ______ caused us certain expenses.

Everyone knows that China’s Bristles are of superior quality ______ those from other countries.

We shall do everything possible to assist you in ______ a mutually beneficial trade.