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)

b. thomas edison invented the electric light bulb. (the electric light bulb/invent/by thomas edison)

c. someone painted the office last week. (the office/paint/last week)

d. several people saw the accident. (the accident/see/by several people)

e. where do they make these video recorders? (where/these video recorders/make)

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