Modals of deduction

She ... live close to where she works because she walks to work.

• must

• may

• could

• might

You’ve been working in the garden all day. You ... be tired.

• could

• may

• can't

• must

I don't like the sound of the engine. It ... be a mechanical problem.

• can't

• must

• might

• mustn't

It ... be a mechanical problem. I've just taken the car to a mechanic.

• must

• can't

• might

• may

Being a sky diving instructor ... be very exciting.

• can't

• could

• might not

• must

He ... like that shirt. I don’t think it's his style.

• may not

• might

• must

• mustn't

They ... very happy about working during the night.

• might not are

• are may not

• can't be

• may are

That ... be Danny. He said he was going abroad this week.

• must

• can't

• might

• could

I'm leaving work now but I ... be a little late if there's traffic on the road.

• can't

• must

• might

• couldn't

Of course John isn't here today. He spent the whole night drinking. He ... be at home with a serious hangover.

• may

• can't

• must

• might not