Réponse:
Salut!!
a) Many victims had been taken to the hospital.
b) The national anthem will be played by the school orchestra.
c) Are they invited by Mrs Thomson?
d) A modern bridge has been built by the workers.
e) Two missing boys had been looked after by the police.
f) This car will be bought by Sarah.
J'espère que ça t'a aidé!!:)