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Rewrite the following sentences in the passive. Omit the agent where necessary.
1.Charity organization have sent food and medical supplies to help the homeless.
2.Specially-trained firefighters will rescue those trapped under debris.
3.The authorities are rebuilding the houses.
Rewrite these questions in the passive.
1.Had they informed the police about the accident?
2.Who invented the first radio?
3.Did you send the parcel to Mary?