Ответ:
1. He is busy
2. He is learning English
3. He have a new books
4. He live in the country
5. He shall see you tomorrow
6. He can understand you
7. He must write a letter
8. He may come next week
9. He do a lot of work every day
10.He did a lot of work yesterday
11. He played football yesterday
12. He bought a new coat last week
13. He have had a letter from Tom
14. He was busy this morning.
15. He could play football very well when I was younger.
16. He always try to get up early
17. He might see you next week
18. He always enjoy a good tilm
19. He had finished my work before you came
20. He watch television every night