Problem: How does the sentence end?

Joel asked Hunter to care for their hostas while they were away, but they died since 
Answer: Joel was more responsible.

Problem: How does the sentence end?

The surgeon was able to reattach the severed finger, but not the toe, because the 
Answer: toe injury was old.

Problem: How does the sentence end?

Erin was always scared to use a public toilet unlike Cynthia because 
Answer: Erin was a germaphobe.

Problem: How does the sentence end?

Cynthia loved to watch soccer but never played liked Maria, by reason that 
Answer:
Maria was athletic.