Сделайте дою 20 .1) andy and i (know) each other since we (meet) in a summer camp four years ago 2) the children (watch) tv for two hours 3) i how long (you learn) to play the piano when (you. begin)? 4) peter (phone) just now he says he (buy) food at 5 o clock yesterday? 5) i see that your hat is wet . (you. swim) ? 6) would y ou like a piece of cake? i (just, make) it.

1) Andy and I have known each other since we met in a summer camp four years ago.

2. The children have been watching TV for 2 hours.

3. How long have you been learning to play the piano? When did you begin?

4. Peter is phoning just now. He says he was buying food at 5 o'clock yesterday.

5. I see that your hat is wet. Have you been swimming?

6. Would you like a piece of cake? I have just made it.