Must / Have to / Mustn't / Don't have to

You .......... smoke in here; smoking is not allowed.

• must

• mustn't

• have to

• don't have to

You ........... be late. It's the most important meeting of the year.

• don't have to

• must

• mustn't

• have to

You ........ go now; you can stay a bit longer.

• have to

• don't have to

• must

• mustn't

You .........put salt in her food; the doctor said she can't eat salt.

• don't have to

• have to

• must

• mustn't

You ........ cook more; there's enough food.

• have to

• mustn't

• must

• don't have to

I _____ leave early because I wasn't feeling well.

• has to

• mustn't

• had to

• have to

I don't like these clothes, but I _____ wear them at work.

• don't have to

• had to

• have to

• must

Teacher: 'You _____ arrive on time for class.'

• have to

• didn't have to

• don't have to

• had to

We had an accident, but it was OK, we _____ go to the hospital.

• had to

• didn't have to

• must

• mustn't

The doctor has put me on a strict diet. I _____ eat more fruit and vegetables and do more exercise.

• don't have to

• must

• have to

• hadn't to