Rewrite the sentences in the Passove Voice:1.They found the solution of

Rewrite the sentences in the Passove Voice:

1.They found the solution of the problem last week.
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2.An opera singer sings the theme nine brilliantly.
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3.Munch painted The Scream in 1893.
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4.He changed the text of the actors last minutes.
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5.I use my smartphone to keep in touch with my friends.
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