MUST – MUSTN’T

We … clean up the kitchen.

You … make such a mess at home.

My friends … make noise in the classroom.

We … write our names right.

He … do this test well.

They … run fast down the corridor.

I … talk on the phone in class.

She … drink water every day.

You … eat fruit for lunch.

The children … eat snow in winter.

You … drink cola every evening.