Peter and Ann WENT away five minutes ago.
2. I HAVE WRITTEN the letter but I HAVEN'T SENT it.
3. He HAS just GONE away.
4. She HAS already ANSWERED the letter.
5. She ANSWERED it on Tuesday.
6. I HAVE just TOLD you the answer.
7. I READ that book in my summer holidays .
8. I HAVEN'T SEEN him for three years. I'LL BE glad to see him again some time.
11. What ARE you DOING ? — I AM COPYING the text from the text-book now.
12. WILL he GO (IS HE GOING) to Moscow next week?
13. He HASN'T SMOKED (HASN'T BEEN SMOKING) for a month. He is trying to give it up.
14. When DID he ARRIVED? — He ARRIVED at 2.00.
15. HAD you SWITCHED the light before you left the house?
Объяснение:
1. They are taking a test.
They have taken a test.
2. She is eating.
She has eaten.
3. I am listening to music.
I have listened to music.
4. The musician is playing a song.
The musician has played a song.
5. She is flying to Berlin.
She has flied to Berlin.