Bonjour il me faudrait de l'aide pour cet exercice svp :

Transforme les phrases suivantes en phrases à la voix passive.

1. The Northern states won the Civil War.
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2. Thomas Jefferson was writing the Declaration of Independence when he received a letter.
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3. John Wilkes Booth had killed Abraham Lincoln.
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4. A policeman has arrested Rosa Parks.
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5. President Johnson would sign the Civil Rights Act long after that, in 1963. _________________________________________________________________