When considering the cost of roofing materials, many people take into account just the shingle prices. This is incorrect, as a roof made just of roofing shingles will not work. You also need to consider all the accessories that are included in a complete roof system.
Business letters tend to have both the sender and receiver's address and the date at the top of the page and they begin with a polite salutation, such as dear Mr. and Mrs, followed by a blank line before the body or the content of the letter.
People tend to confuse between writing a letter and writing an email. Though both letter and email has certain difference, the basic of the spelling and grammar was still an essence to convey a good message. What Is A Letter. Bears an original signature; Perceived to be and treated as being more serious than fax or email