Must Have To Must Not

I can stay in bed tomorrow morning because I _____ work. It's holiday!

• must
• musn't
• have to
• don't have to

Whatever you do, you _____ touch that switch. It’s very dangerous.

• must
• musn't
• have to
• don't have to

You _____ forget what I told you. It’s very important.

• must
• mustn't
• have to
• don't have to

In Spain, teachers _____ work on Saturdays. They are free.

• must

• musn't

• have to

• don't have to

You ______ read this book. It’s really good.

• must
• musn't
• have to
• don't have to

The windows are very dirty. I _____ clean them.

• must
• musn't
• have to
• don't have to

We ______ feed the animals. It’s forbidden.

• must
• mustn't
• have to
• don't have to

In many countries men _____ do military service.

• must
• mustn't
• have to
• don't have to

You _____ park here – it’s illegal.

• must
• mustn't
• have to
• don't have to

They _____ eat too much cake or they'll get fat!

• must
• don't have to
• have to
• mustn't