The elements of all business letters are the following: the heading, the date, the inside address, the salutation, the body, the signature, and the complimentary close. Therefore, the one that is not part of the elements of all business letters is the references.
Muriel is the white goat from the animal farm. She is represented by her revolutionary influence; a torch as a result of her willingness to bring things to the light.

Ummmmm... I think they're important, because to provide order and predictability in social relationships and to make sense of and understanding of each other's actions.

Jace
The topic sentence is usually always in the first sentence of a paragraph. If you are meaning the book or any representations of the novel