Must, mustn't, has/have to, doesn't/don't have to

We _________ forget to take the chicken out of the freezer.

• don't have to

• mustn't

• must

• have to

Do you ________ work next weekend?

• don't have to

• mustn't

• have to

• must

Mom: Angela, you ___________ leave your clothes all over the floor like this.

• have to

• don't have to

• must

• mustn't

My dentist said that I _________ brush my teeth at least twice daily.

• don't have to

• have to

• must

• mustn't

She ______ in line like everyone else.

• must to wait

• has to wait

• mustn't to wait

• doesn't have wait

The kids _____________ sleep regularly to grow healthily.

• don't have to

• must

• mustn't

• must to

Today is Saturday. I _________ get up early.

• must

• mustn't

• don't have to

• have to

You ___________ forget to send that payment. Otherwise, they'll stop the service.

• must

• don't have to

• have to

• mustn't

I __________ pay him back like I promised.

• must

• mustn't

• have to

• don't have to

My boss is very strict. He always says that all employees _____ on time for work.

• must be

• mustn't be

• have to

• don't have to.