21. I try (learn) ______ this book but I haven't succeeded yet. 22. Do you remember (buy) ______ a newspaper for me on the way home? 23. Neither the president nor his representatives (be) ______ at the meeting now. 24. I remember (look) t______ he door because the key was wet and dirty when I dropped it on the street. 25. He couldn't stand (laugh) ______ at people. 26. The kitchen needs (repair) ______ as quick as possible. 27. These scissors needs (sharpen) ______. 28. She wants (make) ______ him (stop) (smoke) ______ ______. 29. Don't think of (carry) ______ your plan at the moment. 30. Phineas has promised ( not do) ______ that action again. 31. Remember (avoid) ______ (hurt) ______ other people. 32. The thief is admitting (steal) ______ my watch. 33. She doesn't like (eat) ______ this sea food. 34. You request the naughty boy (stop) (make) ______ ______ noise because you are working. 35. Don't forget (tell) ______ me if he makes anything wrong. 36. i remember (send) ______ you a gift on your 18th birthday last year. 37. She got used to (clean) ______ the floor. 38. Children (hate) (go) ______ ______ to the dentist recently. 39. He (give) ______ up (smoke) ______ for two years. They don't allow him (smoke) ______ here. 40. It's no use (help) ______ you.