Odpowiedź:
1. Cleaning your classroom is important.
2. Do you enjoy helping others?
3. He finished feeding the animals five minutes ago,
4. He couldn't swim when he was two years old.
5. I don't want to swim in the polluted river.
6. I'm studying very hard to have a good job in the future.
7. My siblings are too busy to play with me.
Wyjaśnienie:
