[Q]: How does the sentence end?

Brett is able to look at the stars more often than Hunter because 

[A]: Brett owns a telescope.


[Q]: How does the sentence end?

The boss did not give Cynthia an award, but gave one to Betty, therefore 

[A]: Cynthia was sad.


[Q]: How does the sentence end?

Lawrence has become very withdrawn and solitary. Donald, on the other hand, has become aggressive and disruptive. While both changes indicate emotional problems, 

[A]:
Lawrence has internalized his.