[Q]: How does the sentence end?

I trained for a marathon and did training but I couldn't do it, the 

[A]: marathon was too hard.


[Q]: How does the sentence end?

My problems were a lot bigger than my families situations because the 

[A]: situations were simple.


[Q]: How does the sentence end?

Swimming was a lot of fun for Tanya but not Katrina because 

[A]:
Tanya had no fear of the water.