(1) Business letters are usually formal.

(2) Business letters do not have to be impersonal and formal.

(3) Business letters need not be formal and impersonal.

(4) There is no single correct layout for business letters.

(5) He uncovered medical reports, pharmaceutical mailers, invoices(Sentence dictionary), business letters.

(6) Business letters should be written in a formal register.

(7) I record my business letters, and my secretary transcribes them.

(8) All business letters are, in a sense, sales letters.

(9) Most business letters are single-spaced with double spaces between the paragraphs.

(10) When writing business letters , euphemism , clearness, conciseness especially courtesy should be paid attention to.

(11) Mainly in business letters to use more simple sentences, short compound sentence and a short compound sentences.

(12) Harry is one of the old school and still writes all his business letters in longhand.

(13) The business secretary combination service provide the communication address a: the collecting bank statement and other business letters (himself, or pay for the domestic mail).