According to the traffic rules, you _________ wear the safe belt while you are driving.

Generally my father is a mild man, but when he gets angry, he ______ be fierce.

The light is on in Mr. Green’s room. He _______ be at home.

---Be quiet! Mr Smith is coming. --- Don’t worry. It__________be him. Mr Smith is much taller.

--- Must I stay at home, Mum?--- No, you_____