Sagot :
Bonjour, :)
Réponse :
Ali was heading for the back of the bus when he was seeing on the front page of a newspaper the death of Emmett Till.
prétérit en BE+-ing =Preterite continuous
(see)
I was seeing
you were seeing
he was seeing
we were seeing
you were seeing
they were seeing
I was heading
you were heading
he was heading
we were heading
you were heading
they were heading
Voilà, en espérant vous avoir aidé :)