Read the following topics. Then say what type and style of letter each one require?

1. While your next-door neighbour is away on holiday, burglars broke into his/her house. Write a letter to him/her saying what happened and giving advice on what he/she should do.
2. You and your friends have recently had a meal in an expensive restaurant expressing your satisfaction with the food but complaining about the service.
3. Write a letter to a member of you family inviting him/her to a family celebration, giving details of the event.
4. You have lost an important certificate which you need in order to apply for a job. Write a letter to the organisation from which the original certificate was issued, giving enough information about it so that you can be sent a copy.