Phân loại các chất thuộc nhóm oxit với công thức oxit đúng và đọc tên các oxit đó KMnO4 , NaO , SiO2 , Mn2O7 , CO4 , K2O , P2O5 , Na2O , NH3 , Ca2O , Fe3O4 , Fe2O3 , C12H22O11

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IV.Use USED TO or DIDN’T USE TO to talk about people’s life 200 ago. Eg:0. light the lamps - People used to light the lamps 200 years ago. 1. believe in fairy tales - …………………….…………………………………… 2. think the earth was flat - …………………………………………………………… 3.have big families - ……………………….…………………………………… 4.go to work by car -……………………………………………………………… 4.travel by plane - ……………………………………………………………… 5.have a computer - ……….…………..………………………………………… 6.hunt for food -…………………..……………………………………...…… 7.sing foreign songs -………………….…………………………………………… 8.walk on foot - ………………….………………… ……..…………… ….. 9. talk on the phone - ……………………………………………… ……………... 10. The houses are very expensive -> …………………………………………………………… 11.The streets are dirty -> ………………………… …………………………… 12.There is so much litter on the street -> ………………………………………… 13.The car parks are always full -> …………………………………………… 14.There is a lot of traffic on the road -> ……………………………………………… 15.It’s noisy at night -> …………………………………………………