4. Change the following sentences into passive sentences using the words in brackets.
a. We sell tickets for all shows at the Box Office. (Tickets for all shows/sell/at the Box Office)
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b. Thomas Edison invented the electric light bulb. (The electric light bulb/invent/by Thomas Edison)
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c. Someone painted the office last week. (The office/paint/last week)
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d. Several people saw the accident. (The accident/see/by several people)
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e. Where do they make these video recorders? (Where/these video recorders/make)
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