Must/Have to/Should/Ought to

The museum is free. You ................. pay to get in.

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

I ......... wash the dishes because I don't have a dishwasher.

• don't have to
• mustn't
• doesn't have to
• have to

You ......... smoke inside the school.

• must
• mustn't
• have to
• doesn't must

Joe ......... cook tonight because he is going to a restaurant.

• don't have to
• doesn't have to
• have to
• must

He ......... be late for the exam.

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

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

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

You .................... wear a helmet when you ride your bike. It’s the law.

• should

• must

• ought to

It’s your duty to keep the house clean and tidy.

• You ought to keep the house clean and tidy.

• You must keep the house clean and tidy.

• You should keep the house clean and tidy.

What ________________ I do? I need your advice.

• must

• should

• have to

It's late. I ________ go home now!

• must

• mustn't

• had to

• don't have to