Упражнение 26 на написание личного письма

Здесь находится упражнение 26 на написание письма личного характера.

… I’ve just got back from a snowboarding holiday in the Alps. I had a great time enjoying nature with my classmates. It was a once-in-a-lifetime experience. How do you feel about adventure travel? What’s the best summer holiday you’ve ever had? Where did you go?
By the way, I finally got an excellent mark for the laboratory experiment in the chemistry course.

Write a letter to Alan.
In your letter:
— answer his questions
— ask 3 questions about the laboratory experiment.
Write 100–140 words.
Remember the rules of letter writing.