Ответ:
1. Mike is from the USA;
Indira often cooks delicious Indian food for her friends;
We enjoy taking part in the international Explorers` club.
2. Carlos is writing an e-mail to his brother;
He is attaching some photos to his letter;
Carlos is leaving in two days.
3. 1) see
2) see, is singing
3) is playing, is
4. 1) Jessica takes part in the international Explorers` club every year.
2) my new friend Marco likes to play football very much.
3) Vanessa is calling her mum now.
4) Nikita sends e-mail to his mum every evening.
5) We discover a lot of interesting facts at our club meeting every day.
5. 1) our meeting starts at 5 pm.
2) look! Nikita and Andrews are discussing their plans for today's evening.
3) Emily is speaking on her mobile phone now.
4) i want to visit Andrew in Ireland.