Bonjour,
Réponse :
WHO, WHICH, WHEN, WHERE et WHOSE.
a) The body was gone when the police arrived.
b) These are the fingerprints which were taken from the crime scene.
c) The suspect whose coat was missing a button was our culprit.
d) This restaurant over there is the place where we met.
e) The person who committed the crime knew his victim very well.
N'hésite pas si tu as des questions ;)