Rebecca probably has millions more subscribers than Sarah because 
OPTIONS:
- Rebecca has been famous for a longer time.
- Sarah has been famous for a longer time.
Rebecca has been famous for a longer time.

The introduction to the book fell flat and people liked the ending better because the 
OPTIONS:
- book was boring.
- ending was boring.
book was boring.

Sarah exercised , ate healthy meals and encouraged Jessica , who was obese, to do the same. 
OPTIONS:
- Sarah was worried about their friends health.
- Jessica was worried about their friends health.
Sarah was worried about their friends health.