Bonsoir pouvez vous m'aider pour cet exercice en anglais svp merci d'avance pour votre aide et reponses

Bonsoir,
1. You have done some good work!
2. You must clean your room!
3. You should eat your main meal firstly.
4. She is very good at maths.
5. You should not play at video games.
6. Why can't you do this exercise?
7. Don't talk to that girl.