[Q]: How does the sentence end?

Leslie explained to Christopher how difficult his upcoming race was going to be.  

[A]: Leslie was determined.


[Q]: How does the sentence end?

Katrina wanted to test out sleeping on Felicia's mattress because 

[A]: Katrina had an uncomfortable bed.


[Q]: How does the sentence end?

Eric was more thankful for the gift than Robert although the gift 

[A]:
Eric received was less expensive.