[Q]: How does the sentence end?

During the calm before the storm, Tanya began freaking out while Samantha remained calm because

[A]: Tanya had a very anxious personality.

[Q]: How does the sentence end?

Because Derrick has more of a history reading books than Eric,

[A]: Eric likes to read less per day.

[Q]: How does the sentence end?

Leslie had better grades than Derrick although

[A]:
Derrick spent more time studying than playing video games.