We sell tickets for all films at the box office. (Tickets for all films/ sell/ at the box office). Tickets for all films are sold at the box office

Câu bị động
1. We sell tickets for all films at the box office. (Tickets for all films/sell/at the box office)
Tickets for all films are sold at the box office.
2. Thomas Edison invented the electric light bulb. (The electric light bulb/invent/by Thomas Edison)
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3. Someone painted the house last month. (The house/paint/last month)
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4. Several people saw the cowboy. (The cowboy/see/by several people)
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5. Where do they make these cars? (Where/these cars/make)
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6. Seven nations signed the agreement. (The agreement/sign/by seven nations)
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7. A stranger helped me. (I/help/by a stranger)
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8. They don't deliver milk on Sundays. (Milk/not/deliver/on Sundays)
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