Exercises: modal verbs of obligation

Ejercicios de verbos modales: expresión de obligación II

Elige la opción correcta entre 'must' y 'have to'.

1 You touch poisonous things.

You mustn't touch poisonous things.

2 Today is Friday and we go to bed soon.

Today is Friday and we don't have to go to bed soon.

3 travel in her job?

Does she have to travel in her job?

4 He do the exam. It´s optional.

He doesn't have to do the exam. It´s optional.

5 You pass a test to drive a car.

You must pass a test to drive a car.

6 sell cigarettes to children?

Must shops not sell cigarettes to children?

7 We be late.

We mustn't be late.

8 She reduce her expenses. She's facing high costs.

She has to reduce her expenses. She's facing high costs.

9 Everyone in the office wear a uniform.

Everyone in the office must wear a uniform.

10 be there one hour before the concert starts?

Do we have to be there one hour before the concert starts?