Chuyển câu sang dạng bị động :
1. The boys broke the window and took away some pictures. 
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2. People spend a lot of money on advertising everyday.
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3. They may use this room for the classroom.
...........................................................................................4. The teacher is going to tell the story. 
...........................................................................................5. The children looked at the women with red hat.  
...........................................................................................6. They have provided the victims with food and clothing.  
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7. People speak English in almost every comer of the world. 
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8. You must use this machine after 5.30 p.m.
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9. You must clean the wall before you paint it. 
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10. They told the new pupils where to sit. 
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