Réponse :
Bonjour,
Le passif au prétérit =
was/ were + participe passé ( 3ème colonne verbes irréguliers )
a. The Teen Summit / organise / by talented artists
The Teen Summit was organised by talented artists.
b. Teens / give / the opportunity to express themselves
Teens were given theopportunity to express themselves
c. Poetry / speak / by youth performer Bintou Camara
Poetry was spoken by youth performer Bintou Camara.
d. These remixes / create / by a DJ
These remixes were created by a DJ.
e. Artivist love letters / write / at the Teen Summit
Artist love letters were written at the Teen Summit