Look at the exam question and answer and do the exercises to improve your writing skills.
Do the preparation exercise first. Then read the text and do the other exercises.
Check your writing - Gap fill - Indirect questions
Check your writing - Gap fill - Useful phrases
Worksheets and downloads
Language level: Upper-intermediate B2
Source:
https://learnenglishteens.britishcouncil.org/skills/writing/upper-intermediate-b2-writing/more-formal-email