Answer:
1. My sisters book and the books of my sisters.
2. certs cool flavor and the cool flavors of certs.
3. the radios dial and the dials of radios.
4. a foots odor and the odors of feet.
5. an actresss award and the awadrs of actresses.
6. a conflagrations heat and the heat of conflagrations.
7. the knifes edge and the edges of knives.