Modal verbs

You ... be quiet in the library. People are studying there.

• don't have to

• must

• mustn't

You ... have a driving licence to travel abroad.

• have to

• must

• don't have to

You ... travel on public transport without a ticket.

• don't have to

• should

• mustn't

I ... get up early during the week, because I commute to school by train and bus.

• don't have to

• should

• have to

You ... finish your homework. The teacher wants to check it tomorrow.

• mustn't

• must

• don't have to

Doctors ... tell secrets about their patients.

• must

• mustn't

• should

Students ... study hard when they want to continue at university.

• should

• mustn't

• don't have to

Jake ... eat so many hamburgers when he wants to lose weight.

• shouldn't

• must

• doesn't have to

You ... take your sister's things without asking for permission.

• must

• don't have to

• shouldn't

He ... wear a coat. It's going to be a hot day.

• must

• should

• doesn't have to