obligation and permission

Retype the sentences into the box. Use a modal verb and keep the meaning the same. Use short forms if possible.

example

You can't smoke. You aren't allowed to smoke.

1	It's wrong to steal from shops. You .
2	Can you eat in class? Are you ?
3	I need to get more sleep. I .
4	It isn't necessary to wear a uniform. You don't .
5	I need to take more exercise. The doctor says I .
6	It's permitted to use the library in the evening. We're .

Need help with this exercise? See natural English intermediate student's book p.64 and p.160.