Modals in the past

1. If you wanted to stay in that hotel, you __ booked before!

2. He __ committed the crime, as he had both the motive and the opportunity.

3. If I had known about your accident, I __ phoned you.

4. Lucy __ attended the concert, but we aren't sure.

5. You __ finished that book already! You only started reading it an hour ago.

6. I think they __ got lost - surely they'd be here by now!

7. Oh no! My phone isn't in my bag. I __ left it on the train.

8. She __ been a lawyer but she decided to study accountancy instead.

9. You __ gone to Dan's party - it was fantastic!

10. I'm so sorry I woke you up. I __ called you if I knew you were sleeping.