Перевести активный в пассивный :

D Change the sentences from active to passive.

18 They take the child to school by car.
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19 We elected Peter as a captain.
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20 The reporter is announcing the results on the radio right now.
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21 The doctor was treating the patient when the ambulance arrived.
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22 We must listen to his advice.
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23 Emma had done the housework before the guests arrived.
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24 The ambulance will take the patient to the nearest hospital.
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25 Tom will have calculated the cost (цена) before the end of the day.
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Благодарю.