This brings health (10) ... and nothing else. address of the person you write to 2a Work in pairs. Read and answer the questions. 1 Who is the letter to? 5 Is the letter formal or informal? 2 Who is the letter from? How do you know? 3 What is going to happen? 6 Do the writers know the person they 4 Why did they write the letter? are writing to? How do you know?