Modal Verbs in the Past

I _____ left my wallet in the restaurant. I paid for the taxi home afterwards.

• must have

• might have

• could have

• couldn't have

Why were there no buses yesterday? Maybe it was the snow

or they _____ been on strike.

• must have

• can't have

• might have

You _____ seen her, surely! She was standing right in front of you.

• must have

• can't have

• might have

Let's ask at reception to see if they have your keys. Someone _____ found them.

• must have

• can't have

• might have

He _____ gone to Russia. He didn't have a passport.

• must have

• can't have

• might have

Oh no! My phone's not in my bag. I _____ left it at home.

• must have

• can't have

• might have

Where's Clare? Her bag's here and her computer's still on so she _____ gone home.

• must have

• couldn't have

• might have

I can't remember my password! But I _____ written it in my notebook as sometimes I do that.

• must have

• couldn't have

• might have

• should have

He wasn't answering the phone before. Maybe he went to the shop or he _____ ______ in the shower.

• must have

• couldn't have

• might have be

• might have been

• must have been

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

• couldn't have gone

• couldn't have go

• might have go

• might have gone

• must have gone