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If you wanted to stay in that hotel you ____ booked before!
should have
He __ committed the crime, as he had both the motive and the opportunity.
could have
If I had known about your accident, I ____phoned you.
would have
Uh-oh, you broke Dad’s favorite pool cue. You __ (not / do) that – you’re going to be in big trouble.
shouldn't have done
I think they __ got lost - surely they'd be here by now!
must have
Oh no! My phone isn't in my bag. I __ left it on the train.
might have
She ___been a lawyer but she decided to study accountancy instead.
could have
You __ gone to Dan's party - it was fantastic!
should have
I'm so sorry I woke you up. I __ called you if I knew you were sleeping.
wouldn't have
Detective, my son ___(not / steal) that car last Sunday afternoon. He was getting married at that time in front of 200 guests!
couldn't have stolen
That smart girl studied a lot, so she __ (do) well on the test, but she didn’t.
should have done
Who broke the big vase in the back office?
might have been
A giant asteroid hit the Earth in the Gulf of Mexico 65 million years ago. Scientists have reached a conclusion they’re pretty confident about: that ___(cause) the extinction of the big dinosaurs.
must have caused
I’m not sure where the boss went this morning. He __ (go) to our other branch office in Glendale.
may have gone
The big grammar test is today. I’m in trouble
I ___(study) last night, but I didn't!
should have studied