Modals + have + past participle

Tom: I had my house painted recently, but when they sent in the bill I was shocked.

If I'd known it was going to cost so much I __________ (not have) it done.

Peter: But it's your own fault, Tom. You ___ (ask) for the price before letting them start.

Mother (very anxious about her son, aged ten): Where is he? He ______ (be) here an hour ago?

(It's now 5.00, and he is usually home by 4.00.)

Friend: He ___ (go) to the playground to watch a football match.

Mother: No, if there'd been a match today, he ___ (tell) me. He always tells me all the football news.

Friend: His teacher ___ (keep) him in as a punishment.

Mother: She ___ (not keep) him in for a whole hour.

Friend: Then he ___ (go) to a friend's house.

Mother: Yes, or he ___ (be) knocked down crossing the street. He may be lying in hospital!

Friend: If that had happened, the hospital ___ (ring) you.