modals

I hear voices in the kitchen but mum said she had a dance class.

Change this sentence into a proper question:

We cannot be friends.

When I was a child, in the afternoons we _________play in the street because there were no cars.

They ________ be the richest person in the village. He's just bought two luxurious cars.

My bedroom ______________be redecorating. The color on the walls is old.

I ___________rather you checked my exercise before giving it to the teacher.