1. I (am writing) an English exercise now.
2. I (was writing) an English exercise at this time yesterday,
3. My little sister (is sleeping) now.
4 My little sister (was sleeping) at this time yesterday.
5. My friends (aren't doing) their homework now. They (are playing) volley-ball.
6. My friends (weren't doing) their homework at seven o'clock yesterday. They (were playing) volley-ball.
7. (Are you eating) ice-cream now?
8. (Were you eating) ice-cream when I rang you up yesterday?
9. What (is your father doing) now?
10. What (was your father doing) from eight till nine yesterday?
11. Why (is she crying) now?
12. Why (was she crying) when I saw her yesterday?
13. She (was reading) the whole evening yesterday.
14. She (isn't reading) now,
15. Now she (is going) to school.
16. What (are you doing) now? —-I (am drinking) tea.
17. (Were you drinking) tea at this time yesterday? — No, I (wasn't drinking) tea at this time yesterday, I (was eating) a banana.
18. My sister is fond of reading. She (was reading) the whole evening yesterday, and now she (is reading) again,
19. Look! My cat (is playing) with a ball.
20. When I went out into the garden, the sun (was shining) and birds (were singing) in the trees.
I was very glad to hear from you again. I haven't written for ages because of my school activities.
In your letter you ask me to tell you about my favorite kind of sports. With a pleasure. I like sport. It plays a great role in my activities. Most of all I like to play basketball. I am a very good player and often take part in different sport competitions. Sometimes we win them but sometimes we lose. Basketball is a team game. It is played in any season because you play this game is indoors game. But sometimes you can see streetball - basketball in an open air. Many people keen in sport because it makes us healthy and help us to be fit. During you play any sport game you are active and it helps you to burn many calories. Basketball is an active game. It makes people be strong, healthy and energetic.
And what about you? Tell me about your favorite kind of sports.
That's all for me for today. I have to go to the swimming pool.
Best regards to your family.
Write soon.
Vadim