Rewrite the sentences, using an appropriate modal.
1. Students are obliged to be in class by 9.00 am.
All students____________ in class by 9.00 am.
2. You don't have permission to enter this building.
You ________this building.
3. It's possible it'll rain later.
It _______later.​

Rewrite the sentences, using an appropriate modal.
1. It's necessary for you to go to the supermarket.
• You______to go to the supermarket.
2. I advise you to revise for exam.
• You ______for your exam.