1. By 10 o'clock the children (do) their homework and were ready to go to bed.
2. Life must (be) very uncomfortable in the Stone Age
3. The hostages were rescued without a shot (fire).
4. My sister just (come) back from abroad. She (seem) (enjoy) her trip very much.
5. This palace (say) (build) in three years.
6. This picture may be a fake; on the other hand it may (paint) by one of the Dutch masters
7. The dinosaur (say) (be) rather a stupid animal
8. She likes her children (go) to the dentist every six months.
9. It's not much use (have) a bicycle if you don't know how (ride) it.
10. I used (ride) a lot but I haven't had a chance (do) any since (come) here.
12. I'm for (do) nothing till the police arrive. They don't like you (move) anything when a crime (commmit).
11. I resented (unjustly accuse) and asked him (apologize)