1.b)
2.c)
3.b)
4.a)
5.c)
6. Helen has cooked a delicious cake.
7. The Browns have moved to a new flat.
8. I have already visited this museum.
9. Parents have just brought a big box.
10. Liz hasn't eaten her lunch today.
11. Have they bought a car?
12. Ted hasn't been to Italy yet.
13. Have all the pupils been present at the lesson today?
14. My friends have already solved their problems.
15. Has she learnt the poem by heart?
16. Has she already sent him a birthday card?
17. Have pupils just left the classroom?
18. Has Mary been to Egypt?
19. Has he come because he has needed help?
20. Have children spent all their pocket money?
21. Have you seen him this week?
22. We have never been to China.
23. She has recently visited 3 museums.
24. Who has bought this house?
25. He hasn't come yet.
26. Where have you spent holidays?
27. I have already watered the flowers.
28. Children haven't gone for a walk since Monday.
29. Masha has visited her grandmother this month.
30. They have lived in this house for 5 years.
2 - Do you think everybody will(?) know how to surf the Internet in the future?
3 - Good swimmers don’t have to be tall.
4 - I am usually late for school.