Ответ:

1 задание

1 on. 10 on

2 in. 11 at

3 at. 12 in

4 on. 13 in

5 at. 14 in

6 in. 15 at

7 at. 16 in

8 on. 17 at

9 at. 18 in

2 задание

1 on. 11 at

2 on. 12 не видно продолжение

предложения

3 at. 13не видно продолжение

предложения

4 in. 14 in

5 in. 15 in

6 at. 16 on

7 on. 17 at

8 on. 18 не видно продолжение

предложения

9 in. 19не видно продолжение

предложения

10 at.

3 задание

1. Columbus made his first voyage from Europe to America in 1492.

2. If the sky is clear you can see the stars in night.

3. After working hard during the day I like to relax in the evening.

4. Neil Amstrong was the first man to walk on the moon on 21July 1969.

5. It's difficult to listen if everyone is speaking at the same time.

6. Jazz became popular in the USA in the 1920s.

7. I am just going out to the shop.I will be back in about 20 minutes.

8. 'Can I speak to John?'...-'I'm afraid he's not here at the moment.'

9. Jim is a very fast runner,He can run 100 metres in 11 seconds.

10. Eve works from Monday to Friday and sometimes she also works on Saturday.