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