[Q]: How does the sentence end?

People wear sunglasses in the summer but not in the winter because the 

[A]: winter is very cold.


[Q]: How does the sentence end?

Christopher always gets knocked down by Steven when they fight each other in the boxing ring. 

[A]: Christopher is weak.


[Q]: How does the sentence end?

Cleaning houses for a living suited Ryan but not Samuel because 

[A]:
Ryan had lots of home maintenance experience.