1. Dear Ms Burton
2. I'm writing to find out more information
3. First of all
4. Secondly
5. Thank you in advance for your help
6. I look forward to hearing from you
7. Yours sincerely

Ответ:

1.Dear Ms Burton

2.I am writing to find out more information

3.First of all

4.Secondly

5.I look forward to hearing from you

6.Thank you in advance for your help

7.Yours sincerely