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.
The greeting in a business letter always ends in a colon. (You know you are in trouble if you get a letter from a boyfriend or girlfriend and the greeting ends in a colon--it is not going to be friendly.) 4. The Body. The body is written as text. A business letter is never hand written. Depending on the letter style you choose, paragraphs may be indented. Regardless of format, skip a line between paragraphs.