Bonjour,
Réponse :
1. Who told you about that?
Who : qui
2. How many people were there at your party?
How many : combien
3. How much did you pay for the CD?
How much : combien ( interroge sur le prix )
4. How often do you have a test in English? Once or twice a week?
How often: à quelle fréquence
5. Whose book is this. Is it yours or Michael's?
Whose : à qui
;)
