Https://viibehouse.com/watch/Xp7j2AZpeUw8AoG https://viibehouse.com/watch/XcuXRZxt9k3Xilp

2. I had been waiting for him for 20 minutes when I realised that I was in the wrong restaurant.
3. At the time the factory closed down, Sarah had been working there for five years.
4. The orchestra had been playing for ten minutes when a man in the audience suddenly began shouting. 
5. I had been walking along the road for five minutes when I saw a monster. 

16.3

1. It was very noisy next door. Our neighbours were having a party.
2. We were good friends. We had known each other for a long time.
3. John and I went for a walk. I had difficulty keeping up with him because he was walking so fast.
4. Mary was sitting on the ground. She was out of breath. She had been running.
5. When I arrived, everybody was sitting round the table with their mouths full. They were eating.
6. When I arrived, everybody was sitting round the table and talking. Their mouths were empty but their stomachs were full. They had eaten.
7. Jim was on his hands and knees on the floor. He was looking for his contact lens.
8. When I arrived, Kate was waiting for me. She was rather annoyed with me because I was late and she had been waiting for a very long time.
9. I was sad when I sold my car. I had had it for a very long time.
10. We were extremely tired at the end of the journey. We had been travelling for more than 24 hours.

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 arrive? - He arrived at 2.00.

15. Had you switched off the light before you left house?

16. I read these books when I was at school. I liked them very much.

17. I couldn't go out because I didn't finish my work.

18. I told you the answer yesterday.

19. What will you do tomorrow in the evening?

20. I didn't meet him last week.

21. I usually leave home at 7 and get here at 12.

22. Here is you watch. I have just found it.

23. Have you had breaskfast yet?