Bonjour
a- She might be sad because she isn't accepted.
b- Her mother can be afraid of what people think.
c- She must have felt ugly.
d- She can have wanted to die.
e- She may have had plastic surgery.
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La tournure des phrases est correcte mais l'emploi du modal est assez subjectif. Si tu veux, tu peux les intervertir...
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Bonne fin de journée
