Biến đổi các câu sau thành câu bị động: When did they open that hospital?

biến đổi thành câu bị động
7.When did they open that hospital?
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8.Did anyone see you come in?
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9.Somebody broke into my house yesterday
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1.     What are you doing at the moment?
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2.     Is Tom making a toy now?
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3.     Are the workers building the school now?
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4.      What is the teacher writing on the board?
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1.   What does Nam watch on TV every day?
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2.    Do you often do your homework?
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