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identify modals that express permission, obligation, and prohibition.

1. Can I suggest
2. In England, most school children have to wear uniform.
3. these pages may be photocopied for classroom use.
4. Ai has to work tomorrow,so he can't come.
5. You should have done more exercise.
6. Visitors must not park in the staff park
7.Could I borrow your pen for a moment please?
8. Visitors can't take photos in the museum.
9. You must not be late to class.
10. Seat belts must be worn by all passengers.​