Ответ:

1. i can't swim very well

2. he should do his homework

...

3. can you tell me the time?

4. i don't have to go...

5. they don't sing well

6. i should ring him tomorrow

7. can you play a musical instrument?

8. we have to work very hard...

пожалуйста 5 звёзд и лайк❤️‍