Choose the alternative which completes the sentence correctly according to the usage of modal verbs.

a) The film starts in ten minutes. We ____ to go now!

1) should 2) ought 3) must

b) You ____ use you cellphone in class!

1) should 2) mustn’t 3) had better

c) You ____ wear the uniform if you’re not going to school.

1) hasn’t 2) shouldn’t 3) don’t have to

d) I ___ listen to music now! I need to study.

1) should 2) have 3) can’t

e) I think she ____ go to bed now!

1) should 2) had better 3) hasn’t to​