Courtesy is one of the principles of business letter writing.

A、focusing on the positive approach

B、using passive voice

C、expressing thanks at the very beginning

D、taking the “You-attitude”

A、showing the writer’s expectation for more future business if the order is accepted

B、leaving room for future cooperation if the order can’t be accepted this time

C、giving new proposal for terms and conditions

D、telling the buyer his next order may be accepted

A、Consideration

B、Clarity

C、Control

D、Conciseness

A、My esteemed company manager

B、Dear manager of XXX company

C、Manager of XXX company

D、The person in charge of XXX company

B．Lovely Yours．

C．Yours faithful

D．Yours faithfully