[Q]: How does the sentence end?

During the concert, the cello sounded better than the violin because the 

[A]: cello was in tune.


[Q]: How does the sentence end?

Elena got very good grades in school while Lindsey was constantly failing classes because 

[A]: Elena had very good study habits.


[Q]: How does the sentence end?

Pam fell down the stairs while carrying a heavy bag, causing her to curse the 

[A]:
stairs in pain.