Modal verbs

You _ drive on the right side.

• must

• have to

• should

My mother told me that I _ go to bed before 10 o'clock. It will be good for my health.

• have to

• should

• must

Students _ always wear uniform. If they don't, teachers will call their parents.

• have to

• must

• should

Students must wear uniform from Monday to Thurday. On Friday, they _ wear uniform, they can wear whatever they like.

• mustn't

  (must not)

• don't have to

• shouldn't

Visitors to the museum _ park their care here.

• mustn't

  (must not)

• shouldn't

• don't have to

My mom angrily told me that I _ brush my teeth twice a day.

• should

• have to

You _ go to the hospital. You don't look very well today.

• should

• must

• have to

You _ talk to your friend like that. It would be very ungraceful.

• shouldn't

• mustn't

• h

I _ wear a mask whenever I go out.

• should

• have to

According to the Government's order, citizens in Ho Chi Minh city _ wear masks when they go out.

• must

• should

• have to