Must / Mustn't

Must

We use must to tell people what they have to do.

Mustn't

We use mustn't to tell people what they don't have to do

Mustn't = Must not

I must go to school.

• Subject (I)

• must / mustn't

• verb in infinitive (go)

• the rest of the sentence (to school)

Multiple Choice

You ________keep quiet in the hospital.

• must

• must not

• mustn't

• cannot

Multiple Choice

complete the sentence

you _________ use mobile phones on an airplane.

• must

• mustn't

• has to

• have to

Multiple Choice

You ______ drive a car with a belt.

• mustn't

• must

• should

Multiple Choice

You ______pick the flowers.

• must

• mustn't

Multiple Choice

There is an important rule about food in the school...

• you have to eat in class

• you must eat in class

• you mustn't eat in class

Multiple Choice

We _____________________ do more exercise to stay fit.

• must

• mustn't

Multiple Choice

We ____________ eat chewing-gum in class.

• must

• mustn't

Multiple Choice

We _________ask the teacher to go to the toilet.

• must

• mustn't

Multiple Choice

We ______speak with another pupil during a test.

• must

• mustn't

Multiple Choice

We _____________sleep in class.

• must

• mustn't

Multiple Choice

You -----------------wash your hands.

• must

• mustn't

Multiple Choice

I _______________finish this homework today. It has to be handed in by tomorrow.

• must

• mustn't

Multiple Choice

We _________________relax sometimes.

• must

• mustn't