Modal verbs: obligation, prohibition and necesssity

No, thanks. I ___ eat any more cake. I'm on a diet.

• must

• have to

• mustn't

• don't have to

You ___ tell anyone what I've just told you. It's a secret.

• must

• have to

• mustn't

• don't have to

Living at home is great. I ___ do anything because my parents do it all for me!

• must

• have to

• mustn't

• don't have to

You ___ get a visa if you want to go to Cuba.

• must

• have to

• mustn't

• don't have to

You ____ pay a fine if you don't return your library books on time.

• must

• have to

• mustn't

• don't have to

Jerry ___ get up early this morning. He isn't going to work.

• must

• have to

• mustn't

• doesn't have to

It's Hanna's birthday tomorrow. I ___ forget to phone her.

• must

• have to

• mustn't

• don't have to

You ___ touch electrical things when your hands are wet. It's very dangerous.

• must

• have to

• mustn't

• don't have to

I think you ____ go to bed early tonight. You look very tired.

• should

• mustn't

• don't have to

• shouldn't

When I was a child, I ___ tidy my room every weekend.

• must

• had to

• mustn't

• didn't have to