Có các oxit sau đây: MgO, Fe3O4 ,FeO, CO2, P2O5, SO3. Chất nào có hàm lượng oxi cao nhất : A.P2O5 B. SO3 C.Fe3O4 D.CO2

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các bạn giúp mình với mình cần gấp I. Rewrite the sentence without changing the meaning 81. What is your date of birth? When........................................................ 82. I am not as good at Maths as my brother is. My brother is............................................. 83. She is usually a hard worker. She ...................................... 84. Who was the inventor of this machine? Who.............................................. 85. We like reading books better than seeing movies. We.......................................................... 86. What interesting movies! How........................... 87. You should not watch TV too late. You’d ...................................... 88. How heavy were you last year? How.................................... 89. We didn’t enjoy the trip because of the heavy rain. The heavy rain stopped.................................... 90. A train leaves at eight o’clock every morning. There is .................................................. II. Rewrite the sentence, using given words 91. One/ disadvantages / living in the countryside / lack / public transport. .............................................................................................. 92. I / always / keep / window / open / order / let / fresh air / in. .............................................................................................. 93. How long / you / leam English? .............................................................................................. 94. Homework / must / be / hand / before / end / the week. .............................................................................................. 95. These exercises / too difficult / students / do / without / mistakes. .............................................................................................. 96. One / my classmates / always / play / computer games. .............................................................................................. 97. Our accommodation / include / ticket price. .............................................................................................. 98. Some / the goods /at the new stores / will be / same / ones / at the small shop. .............................................................................................. 99. People / throw / away / billions / cans / every year. .............................................................................................. 100. The tiger / ask / the farmer / why / strong buffalo / his servant and / he / master. ..............................................................................................