điền since/for.ago 32. I've been working……since……….I got up. 33. The kettle has been boiling…………….ten minutes 34. They have been living in Madrid ……………..1972. 35. He has been in prison……………… four years. 36. He has known about the fact …………….a long time. 37. Conditions have changed a lot ……………….we were children. 38. Our teacher has been very ill …………….the last month. 39. I haven't eaten anything …………….twenty-four hours. 40. In fact he is always very rude. We have been waiting for him …………..half an hour. 41. I haven't seen him for three years. It is because I haven't been there…………..I left school. 42. I have been trying to mend this old fashioned car……………… hours. 43. One of my friends has been teaching in Tokyo…………….. three years. I haven't met him since last year. 44. I haven't enjoyed myself…………….two weeks since I heard that my final exam grades were low. 45. I know that you have never seen a lion………. you were born. Then now I say that we can go to the zoo and see one. 46. The police have been looking for him for two weeks……….. he escaped from the prison. 47. He hasn't spoken to me even a word …………..the last meeting. 48. I haven't phoned him ……………a week. 49. He has been the principal of our high school ……………1988. 49. Dean has been learning Japanese ………..two years. 50. I have been waiting ………….4 o'clock. 51. Sue has only been waiting ……………..20 minutes. 52. Tim and Tina have been learning English …………six years. 53. Fred and Frida have been learning French …………………1998. 54. Joe and Josephine have been going out together ……….Valentine's Day. 55. I haven't been on holiday ………………….last July. 56. Mary has been saving her money ………….many years. 57. I haven't eaten anything …………….breakfast. 58. You have been watching TV …………hours. 59.  We have been living here ……………2 months. 60. What have you been doing _____ we last spoke? 61. What has changed in your life _____ you moved here? 62. I have been working full-time _____ several weeks now. 63. Donald hasn't wanted to talk to me _____ our argument. 64. Tony Swanson has been with the company _____ 25 years. 65. The little girl was hungry because she hadn’t eaten anything _____ a while. 66. Puerto Ricans have been migrating to the United States _____ over a century. 67. Human beings have sought to know the unimaginable _____ the beginning of time. 68. It is believed that everything in the universe has existed _____ the Big Bang 15 billion years ago. 69. Is there a family member who has a talent that has been in your family _____ several generations? 70. The weather is dry. It hasn't rained…………….a few weeks. 71. It's been raining…………….lunchtime. 72. Sarah has lived in Paris…………….1995. 73. Paul has lived in London…………….10 years. 74. I'm tired of waiting. We've been sitting here…………….an hour. 75. Kevin has been looking for a job…………….he left school. 76. I haven't been to a party …………….ages.