1. they apologized for be) unfriendly. 2. they have (not / to buy) our house. 3. i would help you if i (to have) more time. 4. if only we (to do) something to stop them. 5. a bag (just / to find) by the police. 6. do you know where your cat (last / to see) and by whom? 7. kelly told us (not / to go) to the hairdresser's in the high street. 8. andy asked our teacher if he (to mark) our tests yet. 9. come on. look for him. he can't (to go) far yet. 10. i'm going to have my bedroom (to decorate) 11. could you call me back later? i (to watch) a very interesting documentary. 12. we regularly (to meet) to play the guitar together.