Past modals of deduction

The driver in the red car ____ ( be) drunk

He _________ gone to the beach. He hates being in the sun!

• could have

• must have

• can't have

• might have

He _________ gone to the city center. He did say he wanted to go Christmas shopping today.

• could have

• can't have

• couldn't have

• might not have

Maybe somebody scratched my car in front of the supermarket.

• Somebody may have scratched my car in front of the supermarket.

• Somebody may scratched my car in front of the supermarket.

• Somebody may have scratch my car in front of the supermarket.

• Somebody may scratch my car in front of the supermarket.

Wow! Have you finished all that already? You _____ been hungry!

• must have

• may have

• can't have

The weather ___________ have been hot this summer because there’s no water in the lake.

• may

• can't

• must

This food was rotten. That __________ the reason why most people got sick.

• could have been

• may not have been

• may be

You seem to know everything about that old band. You ________ (listen) to them a lot!

• couldn't have listened

• must have listened

• might have listened

• may have listened

He _____ known about it when I saw him. I'm sure he would have told me.

• must have

• might have

• can't have

Sorry, I don't know if she's here or not. She was feeling ill so she _____ gone home.

• must have

• might have

• can't have