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minhchau15012001
2 năm trước
Có dd muối MgCl2 có lẫn tạp chất là CuCl2. Có thể dùng chất nào để làm sạch muối Magie clorua
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Exercise 2: Chuyển câu sau sang câu bị động 1. John gets his sister to clean his shirt. -> 2. Anne had had a friend type her composition. -> 3. Rick will have a barber cut his hair. -> 4. They had the police arrest the shoplifter. -> 5. Are you going to have the shoemaker repair your shoes? -> 6. I must have the dentist check my teeth. -> 7. She will have Peter wash her car tomorrow. -> 8. They have her tell the story again. -> 9. Mary is cutting a cake with a sharp knife. -> 10. The children looked at the woman with a red hat. -> 11. They have provided the victims with food and clothing. -> 12. People speak English in almost every corner of the world. -> 13. You mustn’t use this machine after 5:30 p.m. -> 14. After class, one of the students always erases the chalk board. -> 15. They paid me a lot of money to do the job. -> 16.The teacher gave each of us two exercise books. -> 17. Someone will tell him that news. -> 18. They have sent enough money to those poor boys. -> 19. They have given the women in most countries in the world the right to vote. -> 20. We should clean our teeth twice a day. ->

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