We .................. all wear seat belts in the car.
have
must
2. You ............... ride your bike in the park. Look at the sign!
mustn’t
don’t have to
3. Your room is very messy. You ............ to tidy it.
must
have
4. We ............ take the bus. My dad can drive us to the shopping center.
don’t have to
mustn’t
5. You ..................... buy a ticket for the ride. You ................ get on without one.
had to / don't have to
have to / can't
6. Ali .......... to study yesterday, so he didn’t come to the park.
has to
had
