Эссе по английскому языку

Необходимо буквально 7-8 предложений по каждому вопросу:
1.What kind of information do we give to introduce the main activities of a company?
2.What kind of information can be included in a business letter to break the ice between the participants or to be friendly?
3.What are the rules of polite behavior at work?
4.What cultural differences connected with polite behavior do you know? Give examples
5.What are the main ways of selling in different companies?