单选题 The discount of 5% is allowed ______ your order is over 5,000 pairs.

单选题 Please ______ your sales contract in duplicate on Order No.888.

单选题 A number of cable exchanges have ______ our purchase from you of the following:

单选题 We hope to book ______ you a repeat order ______ the following lines USD 280 per set CIF London.

单选题 Since this ______ is concluded successfully, he is obliged to give up the idea of destroying it.

单选题 We give you explanation on declining your order as follows, ______ the view of ironing out (消除) the misunderstanding between us.

单选题 We return herewith one copy ______ signed to you for your files.

单选题 Please sign and return one copy to us ______ our records.

单选题 ______ our order of June 17, we will keep you well advised of the relative development.