I ______ eat too much cake or I'll get fat!.
mustn't
The museum is free. You ______ pay to get in.
don't have to
John's a millionaire. He ________ go to work.
doesn't have to
You ______ pay more attention in class.
should
Children ____________tell lies. It's very naughty.
mustn't
The test is next week. We ______ study for it now.
should
She ________ go to the dentist if her tooth still hurts.
should
You ________ tidy up now. I'll do it later.
don't have to
You ________ see the new Star Wars movie. It’s great!
should
You _________ eat that dessert if you are sick.
shouldn't
You can borrow my new dress, but you _____ get it dirty.
mustn't
You _______tell anyone what I just told you. It's a secret.
mustn't
I ________ do my washing because my mother does it for me.
have to do
She _________buy that computer, it’s too old.
shouldn’t
All students ________ be on time for class.
must
You look tired. You ________ work so much.
shouldn’t