Bonsoir,
Réponse:
a) You should ask your sister why she was embarrassed.
b) You should ask your teacher to explain to you what he said because you didn't understood.
c) You shouldn't eat that much sweets.
d) You should answer the ad to find a job.
e) You shouldn't answer your teacher after he told you off.
J'espère que j'ai réussi à t'aider !
Passe une bonne soirée