Bonjour !
a) Bob has traveled all over the world.
b) I have never visited London.
c) Has your mother ever forgotten your birthday ?
d) I have never taken a plane.
e) Have you ever dived from a springboard ?
f) My brother has always been absent-minded.
g) I have eaten horse meat.
h) Have you ever fallen in love ?
i) Have you read « Harry Potter and the Sorcerer's Stone » ?
j) Yes, I have, and I have seen the film, too.
Explications :
Present perfect : Sujet + Auxiliaire have au présent + Participe passé + Complément => I have eaten horse meat.
J'espère t'avoir aidé. Bon courage !