C.

1. If she had goten up earlier, she would have arrived on time.

2. If he hadn't broken his leg, he would have taken part in the contest.

3. They would have found the building if they had listened to me.

4. If we hadn't busy yesterday, we would have come to her wedding.

5. If I had known her number, I would have called her.

6. If he'd booked a table in the restaurant before, we wouldn't have ended up like this.

7. If we'd seen the restaurant owner before, we would have recognized her.

8. If the receptionist had known the guest's name, she would have called him.

9. If the director had agreed with the arrangement, I would have called the hotel immediately.

10. If I'd had more time, I would have checked my paper again.

Singkatan

I'd = I had

We'd = we had

He'd = He had