Bonjour
obligation, interdiction ou permission au passé
1- Rudy Bridges had to spend the whole year on her own in the classroom because white parents were again the segregation. She was allowed to go to the canteen with other white children.
2- During the segregation, Blacks and Whites couldn't (OU were not allowed to) share the same public places. Blacks could take the bus, but they had to sit at the back.
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could = pouvait
had to = devait
was/were allowed to = avait la permission
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bonne fin de journée☺☺☺