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介词填空 Dear Madam or Sir: We wish to (1)i you that the goods (2)u L/C Number 46 have been (3)r for quite some time. According to the (4)s in the foregoing sales confirmations, (5)s is to be made during May/ June, However, we have not yet (6)r your L/C even though you promised to (7)e it immediately after signing the (8)S . We must (9)p out that unless your L/C reaches us by the end of this month, we will not be able to (10)e shipment within the stipulated time. Please look into this matter and let us have a reply without delay. Yours sincerely,