PAST MODALS

I can’t believe you met Steve Jobs in person. That _______ been amazing!

• could have

• must have

• might have

Do you think we _______ avoided the economic crisis if we had taken greater precaution?

• might not have

• must have

• could have

John _______ been at the party last night. He’s not even in the country. He flew to Japan yesterday morning.

• couldn't have

• may not have

• might not have

The investigators have several ideas about what _______ caused the fire.

• would have

• might have

• could have

I’m not completely convinced of his innocence. I think he _______ been involved.

• must have

• may have

• might have

Did I do the right thing? Is it what you ________ done?

• would have

• must have

• might have

Our security system shows that he swiped in with his badge at 8:14 AM, so he ________ been in the office yesterday.

• must have

• could have

• might have

Matt _______ graduated college in 1997. He was only 14 years old.

• must have

• might not have

• couldn't have

Teresa’s English is flawless. She _______ had a lot of exposure to the language.

• could have

• must have

• might have

The virus _______ done us a lot of harm. Fortunately, it didn’t.

• couldn't have

• might have

• could have