Ответ:

a) Examples from the email:

  • Andrei and I go swimming.
  • Andrei finds it tiring, but I’m really keen on it.
  • I can have guitar lessons on Mondays or piano lessons on Fridays.

b)

  1. Alina likes music, but she doesn’t like Maths.
  2. Do you want to go to the cinema or watch a film?
  3. I love surfing the Net and sending emails.
  4. PE is really fun, but it’s sometimes tiring.
  5. Geography is interesting and fun.