Doctors ___ wear a mask when they perform surgery.

David ___ watch his little sister when his parents go out.

The teacher said we ___ do the homework if we don't have time.

You ___ tell the doctor the truth or she won't be able to help you.

Does Henry have to give a presentation at the meeting?

You ___ smoke here. There is a 'No Smokin' sign by the door.

Relax, it's the weekend! We ___ get up early.

When the traffic light turns red, you ___ stop your car.

I have an important exam tomorrow. I ___ study hard for it.

I ___ get up very early every morning.

John and Cindy ___ go to work every day.