I. Supply the correct forms of the verbs in brackets.
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.
11. I resented (unjustly accuse) and asked him (apologize).
12. I’m for (do) nothing till the police arrive. They don't like you (move) anything when a crime (commit).
O_o