Modals of deduction (can’t, might, must)

What does Pete’s friend do? - I’m not sure, but he … be a doctor. I think he works at the hospital.

• must

• can’t

• might

• mustn’t

Laura … like that skirt. It’s not really her style.

The neighbors … be out. There aren’t any lights on the house.

• must

• may

• might

• can’t

Your sister … have a lot of money if she drives a Porsche.

• can’t

• can

• might

• must

He … be American. He’s wearing a baseball cap.

• must

• can

• might

He … he lost. He’s looking at the map.

• must

• couldn’t

• could

• mustn’t

Jack … be at the party. – I’m not sure. (2 correct answers are possible)

• could

• must

• may

• can’t

They … be having party – the music’s very loud.

• mustn’t

• can’t

• must

He must be a tourist. …

• He’s looking at a map

• He’s wearing school uniform

• It’s freezing and he isn’t wearing a jumper

Are your neighbors away? All the curtains are closed. I’m not sure. I suppose they … be on holiday.

• can

• must