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You __________ seen her in Chicago! I know for a fact that she wasright here in Phoenix!

must have

should not have

couldn't have

Yes, I know that I __________ studied last night, but I decided towatch TV instead.

would've

should've

must've

Where's Jill? She __________ forgotten that we were supposed to meet at 2:00 PM.

would've

should've

must've

I __________ been glad to help you. Why didn't you ask?

would've

could've

must've

Look! It's raining and Professor Johnson is all wet. He __________forgotten his umbrella again!

should've

would've

must've

You __________ turned off the computer when you did! You've caused allkinds of problems!

shouldn't have

must not have

might not have

She __________ study last night, so she didn't.

didn't have to

mustn't

didn't ought to

Yes, she __________ been here yesterday. I don't think she was, but Ican't prove that she wasn't.

could

could've

couldn't have

I'm not sure where Dave is. He __________ taken Benjamin to a movie or to the zoo.

would have

may have

ought not to have

You shouldn't have driven so fast! You __________ had an accident!

would have

may have

might have