Нужна помощь с этим заданием!!!Пожалуйста

1. i’m not busy at the weekends
2. the student is not responsible for his work at the university
3. Do medical students study anatomy?
4. In Ukraine there is a wide network…
5. the scientists are still doing…
6. the equipment of the laboratory is modern and presents great..
7. my everyday activities are quite..
8. the sciences we study are difficult… good knowledge is necessary