[Q]: How does the sentence end?

The lawn of Amy looks much greener than Lindsey's because

[A]: Amy uses a much better fertilizer.

[Q]: How does the sentence end?

Kevin decided to treat Derrick to a meal at their favorite restaurant because

[A]: Kevin appreciated them a lot.

[Q]: How does the sentence end?

Matthew explained to Kyle about how he was going to fly standby in order to save money.

[A]:
Kyle was worried.