Modals: deductions about the past

Why were there no buses yesterday ? Maybe it was the snow or they __ been on strike.

• must have

• might have

• couldn't have

Tags

CCSS.L.4.1C

CCSS.L.9-10.1B

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

• must have

• might have

• can't have

Tags

CCSS.L.4.1C

CCSS.L.9-10.1B

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

• must have

• might have

• can't have

Tags

CCSS.L.4.1C

CCSS.L.9-10.1B

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

• must have

• might have

• couldn't have

Tags

CCSS.L.4.1C

CCSS.L.9-10.1B

I explained the homework. but she did the wrong page. She __ misunderstood me.

• must have

• may have

• can't have

Tags

CCSS.L.4.1C

CCSS.L.9-10.1B

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

• must have

• can have

• couldn't have

Tags

CCSS.L.4.1C

CCSS.L.9-10.1B

It is still a mystery how the robber gained access to the bank. Police are investigating whether the suspect __ known one of the emploees.

• must have

• may have

• couldn't have

Tags

CCSS.L.4.1C

CCSS.L.9-10.1B

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

• must have

• could have

• can't have

Tags

CCSS.L.4.1C

CCSS.L.9-10.1B

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

• must have

• might have

• can't have

Tags

CCSS.L.4.1C

CCSS.L.9-10.1B

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

• must have

• may have

• couldn't have

Tags

CCSS.L.4.1C

CCSS.L.9-10.1B