Past Modals of Deduction

Your mother ____________ (be) a great cook. Everyone wants her recipe book!

• can't have been

• must have been

• must have be

• could have been

I don´t know why I was so tired in college. I ___________ (be) working so hard.

• could have been

• must not have been

• can´t have been

• might have been

Do you know where Carl went? He ______________ (leave) - his car keys are on the table.

• might have left

• must have left

• can't have leave

• couldn't have left

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

To give the promotion to Harold was silly. He __________ (know) much about this company after only a year working here. No wonder our sales are down!

• couldn't have know

• couldn't have known

• could have known

• could had known

Go and look in the kitchen for your gloves. You_______ (put) them in there...

• might have put

• could have putted

• might have putted

• could have put

Oh, we have a missed call. It ___________ (be) Kate. She always calls on Wednesday.

**(Assuming today is Wednesday).

• must have been

• can't have been

• might have been

• had to be

Dan had been practicing for the concert since June. He ___________ (do) his part perfectly.

• must have done

• could have done

• might have done

• can´t have done

That couple _____________ (think) much of the show. They lest after only 20 minutes!

• must have thought

• can't think

• couldn't have thought

• couldn't has thought

The family next door to me growing up had a new car every week. They ______________ (make) a lot of money!

• could've made

• might've made

• must´ve made

• can't have made