Réponse:
Sarah is more energetic than Ron. (+)
Ron is less messy than Sarah. (-)
Sarah is more flexible than Ron. (+)
Ron is more lazy than Sarah. (+)
Sarah is less hardworking than Ron. (-)
Explications:
quand tu as " more ... than ... " = plus ... que ... (+)
quand tu as " less ... than ..." = moins ... que ... (-)