. I can't concentrate ON anything at the moment. 2. I borrowed an umbrella FROM a friend of mine. 3. I insist ON knowing what happened. 4. I'm looking FOR a present for Laura. Can you think OF anything? 5. When I arrived at the station it occurred TO me that he might have forgotten i was coming. 6. I can't think OF any reason why the accident happened. 7. You look sad. What are you thinking ABOUT? 8. She listened TO my story sympathetically. 9. Doesn't he have a job? What does he live ON? 10. He asked me to look AT the document and then sign it. 11. I've been looking FOR a cup to match the one i broke. 12. I am afraid he has never heard OF Michaelangelo. 13. I haven't heard FROM Sarah yet. I hope she will write soon. 14. I am bored. Can't you think OF something we can do? 15. The road construction in the town centre prevented us FROM driving through the centre of the city. 16. I can't imagine your mother approving OF what you are doing. 17. You can't accuse her OF negligence like that. 18. He's very forgetful. His children always remind him OF his wife's birthday. 19. Some parts of the city remind me OF my home town. 20. We often call ON our next door neighbour. 21. He takes AFTER his mother; he has blue eyes and fair hair too. 22. I came ACROSS this photograph by accident when i was cleaning the attic. 23. Critics commented unfavourably ON his new play.