What must you do?
We must wash the dishes.
What must they do?
They must feed the cat.
What must they do?
They must tidy the room.
What must he do?
He must drink water.
What must they do?
They must sweep the floor.
What must the monkeys do?
They must clean the car.
What must he do?
He must do the laundry.
What must the girl do?
She must get up.
What must they do?
They must put out the garbage / They must take out the garbage.
What must they do?
They must do the shopping.