MODAL PERFECT

Detective, my son _____________ that car last Sunday afternoon. He was getting married at that time in front of 200 guests!

• can't have stolen

• shouldn't have stolen

• may not have stolen

That smart girl studied a lot, so she __________ well on the test, but she didn’t.

• may have done

• should have done

• must have done

- Who broke the big vase in the back office?

- It ______________ Brian – he’s very clumsy.

• should have been

• might have been

• ought to have been

A giant asteroid (tiểu hành tinh) hit the Earth in the Gulf of Mexico 65 million years ago. Scientists have reached a conclusion they’re pretty confident about: that _______ the extinction of the big dinosaurs.

• may have caused

• should have caused

• must have caused

I’m not sure where the boss went this morning. He _____ to our other branch office in Glendale.

• may have gone

• should have gone

• would have gone

The big grammar test is today. I’m in trouble. I _________ last night, but I didn't!

• should have studied

• may have studied

• must have studied

Taylor Swift’s latest boyfriend just left her for a younger girl who isn’t even famous. She _______________happy when she found out! (She'll probably write a song about it.)

• shouldn't have been

• can't have been

• mustn't have been

- I didn’t know who to ask for help in choosing an American college.

- Oh, you _____________ to Karen – she’s our school’s university adviser.

• must have talked

• might have talked

• should have talked

Uh-oh, you broke Dad’s favorite pool cue. You _______ that – you’re going to be in big trouble.

• may not have done

• must not have done

• shouldn't have done

- Wow, Sally has never missed a day of work before.

- Well, she was coughing yesterday, and she didn’t look good. She __________ sick.

• should have gotten

• must have gotten

• ought to have gotten