task 2
с моей точки зрение во всех пропусках должно стоять «can»
task 3
1. must
2. should
3. must
4. can
5. may
6. can
7. can
8. can
9. should
10. can
task 6
2. My sister never goes to the cinema
3. I do sometimes play football in the park
4. I'm usually late for school
5. My parents do drive to work occasionally
6. My dog always sleeps on my bed
task 7
не видно
task 4
1. Actors can learn a lot of dialogues by heart
2. Your glass is empty. Should I refill it?
3. Should I introduce mr. Brown to you?
4. My sister can play a few musical instruments.
5. Some years ago I didn't speak English
task 5
2. We always train for two hours before breakfast
3. Srah never reads her text messages
4. Ahmed and Natalie go cycling after work occasionally
5. I'm often bored at the weekend
6. On Sundays my cousins are rarely at the sports centre