Giải giúp em bài này với ạ, vài này là điền giới từ ạ ----- Nội dung ảnh ----- 49. That man escaped from prison. 50. You can't rely on the post. I always late. 51. All of you here are capable. 52. Better methods of refrigeration depend on that job. 53. Is she accustomed to doing her homework? 54. He's very good at telling jokes. 55. Peter is very familiar with planting potatoes. 56. Steel is most useful. 57. What is the reason ... 58. I'm really proud ... 59. Why are you laughing ... 60. He got back home ... 61. They are very keen ... 62. Who are you waiting ... 63. Are you accustomed to doing those exercises? 64. Tennis is a very different game ... 65. If you are not careful, you will fall ... 66. He put his hat ... 67. Four national records were set ... 68. They succeeded in swimming across the river. 69. I always listen to music on the radio.