Must and have to

Which sentence expresses an external obligation?

• I must call my doctor.

• I have to follow the school rules.

• You must not touch that.

Which sentence means something is prohibited?

• You must not park here.

• You don’t have to park here.

• You have to park here.

Which sentence expresses something that is NOT necessary?

• You must study for the test.

• You have to study for the test.

• You don’t have to study for the test.

I _______ wear a suit to work, but I prefer to dress casually.

• must not

• have to

• don’t have to

You _______ bring your ID to the airport. It’s required.

• must

• don’t have to

• must not

You _______ use your phone during the exam. It’s forbidden.

• don’t have to

• must not

• have to

Which sentence expresses a strong personal obligation?

• I must finish this project today

• I have to finish this project today.

• I don’t have to finish this project today.

I _______ leave early today because I have an appointment.

• don’t have to

• have to

• must not

We _______ talk about the surprise party. It's a secret!

• don’t have to

• must

• must not