Cho tam giác ABC vuông cân tại A. Gọi M trung điểm của BC. Từ M vẽ ME // AB , MF // AC ( E thuộc AC, F thuộc AB ). a) Chứng minh ∆MEC=∆MFB. b) Chứng minh ∆MEF=∆MFE. c) Tam giác MFE là tam giác gì?

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giúp mình với 41. John soon rowed _____ the river and tied _____ the boat _____ the other side. 42. _____ both sides _____ the road there were rubber estates. 43. _____ the holidays I intend _____ visit many places which I have heard _____ from friends who have been to them. 44. The new dam produces electricity _____ many parts of the country. 45. I asked my mother _____ the key _____ the cupboard. 46. The car nearly knocked me _____. 47. _____ about two weeks our holidays will start. 48. I expect _____ return _____ Kuala Lumpur _____ about a week's time. 49. The bottle slipped _____ my hand. 50. _____ the last holidays I was _____ hospital. I was looked _____ _____ a nurse. 51. My front tyre was punctured _____ the way _____ school. 52. _____ Thursday everything seemed to go wrong _____ me. 53. I got up _____ seven o'clock, had my breakfast and then said goodbye _____ my parents. 54. While I was waiting _____ the bus _____ come, I saw a motorist stopped _____ the police _____ speeding. 55. We had a last look _____ every part of the island. 56. I was late _____ school because _____ the storm. 57. Coconut palms are grown _____ seed. 58. I hadn't seen my cousin _____ a long time so I stopped to chat _____ him _____ an hour or so. 59. She bought all sorts _____ things _____ the market. 60. Old coconut shells can be made _____ quite useful things. 61. I hope to go early _____ December but I must return _____ the end of the month. Joan is coming to see us _____ the first of January. 62. He doesn't like to admit that he has no hope _____ getting the job. 63. I shall probably stay with them _____ about a day or two. 64. I was thinking _____a suitable day _____ our journey _____ Hawaii. 65. Put that box _____ the corner _____ the room, please. 66. The man _____ charge _____ the team is a friend of mine. 67. He took us _____ a drive round the island. 68. She comes _____ school _____ a taxi but goes home _____ bus. 69. We shall picnic _____ the beach _____ Causeway Bay. 70. _____ the coming holidays I hope to stay _____ my uncle's house. 71. They are all under fifteen except _____ Peter whose fifteen birthday was _____ the fifth _____ last month. 72. My father is going to France _____ December the third and staying _____ a few days. 73. She tidied _____ the house in preparation _____ the visit of her relatives _____ Japan. 74. _____ ten o'clock a taxi is coming _____ us. 75. I shall stay _____ London _____ five days _____ least. 76. We went _____ chartered bus and our teacher went _____ us. 77. I go to school _____ the morning; I go home _____ the afternoon. 78. I work and play _____ the evening, and I sleep _____ night. 79. In the morning I leave my house _____ seven o'clock. I return _____ two o'clock. I go _____ bed _____ ten o'clock. 80. My parents work _____ a farm but my brother works _____ an office. 81. My uncle sells his fish _____ the market. 82. I can see many towns _____ the top _____ the mountain. 83. Tomorrow I must help my mother _____ her work _____ the house. 84. I live _____ my uncle's house which is about a mile _____ school. 85. He played football _____ his country _____ several years. Then he moved _____ New York and could not represent his country. 86. The police inspector was very polite _____ us and thanked us _____ telling him _____ the men. 87. The firemen soon put _____ the fire _____ the help of a few volunteers _____ the village. Then the crowd soon broke _____. 88. This machine works _____ electricity but that one runs _____ petrol. 89. I'll think _____ your plan and let you know whether I agree _____ it. 90. Last Sunday was one of the most enjoyable days _____ my life. 91. The lorry was traveling _____ full speed when it collided _____a bus. It skidded _____ the road and fell _____ a ditch. 92. When the light changed _____ red, I put _____ my brakes and stopped. 93. We played badminton _____ five o'clock _____ nearly seven o'clock. 94. He asked me to take the books _____ the cupboard and give them _____ the librarian _____ the library. 95. The dog crawled _____ the narrow hole and reached the other side _____ the wall. 96. We stopped _____ the restaurant _____ a meal. 97. She filled the kettle _____ water and put it _____ the stove _____ the kitchen. 98. One of the players did not turn _____ so I played _____ a substitute. 99. I gave the purse _____ the policeman _____ duty _____ the police station. He asked me _____ my name and address. 100. He was fined _____ parking his car _____ the wrong place.