Problem: How does the sentence end?

Tanya was tired all the time but not Rebecca because
Answer: Tanya had a very rambunctious toddler.

Problem: How does the sentence end?

Cynthia asked Jessica if they would join an exercise program with her.
Answer: Cynthia was on a diet and didn't want to go alone.

Problem: How does the sentence end?

Ryan was a much faster runner than Justin, so
Answer: Justin avoided running in the 5K marathon.

Problem: How does the sentence end?

Christine had a tough persona compared to Lindsey, because
Answer:
Lindsey had been through a little in life.