Réponse:
a. She didn't use to put things in the correct recycling bin.
b. She used to leave the lights on when she leaves a room.
c. She used to leave the television on standby.
d. She didn't use to try to reuse things. (ou She didn't use to reuse things.)
e. She used to let the water run when she cleans her teeth.
J'espère avoir pu t'aider, bonne soirée !