[Q]: How does the sentence end?

Mary had issues with hearing Katrina when they talked, because 

[A]: Mary had problems with their ears.


[Q]: How does the sentence end?

Lindsey cries and gets angry more often than Patricia because 

[A]: Lindsey is the more emotional one.


[Q]: How does the sentence end?

The teacher was sad that Mary didn't have any skill as opposed to Katrina, due to 

[A]:
Katrina being attentive.