Choose the mistake (A or B) and then correct it

1. [ ] an artist is, the
   [ ] he has of becoming famous.
2. The film Happy Feet wasn't
   [ ] the film Madagascar, and also Madagascar was
   [ ] than Happy Feet.
3. Stunts in adventure films today are becoming
   [ ] dangerous
   [ ] in the past.
4. Pam's voice is
   [ ] than her sister's, but she doesn't feel
   [ ] singing in front of others.
5. I think jazz
   [ ], but my friend Sophie insists that reggae is
   [ ] than jazz.