[Q]: How does the sentence end?

The summer camp counselor, Amy, gave lessons to Katrina because

[A]: Katrina was an eager student.

[Q]: How does the sentence end?

The symphony could improve its performance with the new conductor, as the

[A]: symphony needed lots of help.

[Q]: How does the sentence end?

Laura chose a leather leash instead of a chain because the

[A]:
leash seemed more professional.