14. His parents don’t allow him (to stay up/staying up) after ten o’clock. 15. I don’t mind (to drive/driving) to the restaurant. 16. Please remember (to post/posting) my letter. It’s very important. 17. We were late. Tom suggested (to take/taking) a taxi. 18. I asked him to stop (to talk/talking), but he kept (to ask/asking) me questions. 19. Sometimes she puts off (to do/doing) her homework. 20. They always forget (to water/watering) the plants.