Bonsoir, voila les réponses à ton exercise:
Dear Harry,
This week was just fantastic. There were Mardi Gras parades parading in the streets of New Orleans. The music was so great: there were brass bands playing and marching to the rhythm of the music. People were dressed up because it was floats here. There were even people watching the streets from balconies. The crowd was cheering all the time. There were parties everywhere in town. You should definitely come with me next year!
Voila j'espère que ça t'aura aidé, bonne soirée:)