By () billy we have learned that you would like to establish business relations with us

单项选择题The purpose () this letter is to inform. you ()the important meeting.

单项选择题Much () our regret, we cannot ship the goods within the time limit of the L C owing to the unforeseen difficulties on the part of mill.

单项选择题we expect to travel from Beijing to Shanghai () Tianjin

单项选择题(), I am returning the radio to you and ask that you issue me a full refund.

单项选择题We shall do our best to ()your requirements.

单项选择题Considering your financial situations, which we realize have not been good recently, we have not () you for payment.

单项选择题This letter is in response () your inquiry regarding

单项选择题we demand delivery of said goods in accordance () our contract.

单项选择题I am () to have received the award.

单项选择题It was () to learn that the chocolate we shipped to your firm last week had been arrived