______,weareairmailingyouourlatestquotation-sheet.

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

IfwehadreceivedyourL/C,we______shipment.

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

The consignment certainly does not match the samples ____ you sent us last month.