Réponse:
Exercice 1 :
a) Have you already met him ?
b) He has just arrived. That's why I haven't spoken to him yet.
c) It's the most wonderful weekend I have ever spent
d)Have you ever been to Eurodisney ? No I haven't been there yet but I will go some day
e) I really think He's the most wicked man I have ever seen
f) He feels sorry because He hasn't finish the job yet
g) She has never felt so good
h) We have already done this exercise, madam !
Explications :
Au present perfect, on place d'abord l'auxiliaire have conjugué au présent + le participe passé du verbe ( s'il est régulier on ajoute -ed sinon c'est la colonne participe passé des verbes irréguliers)