[Q]: How does the sentence end?

Felicia had Katrina personally train her on strengthening her lower abs, but

[A]: Katrina got into an accident and couldn't train her anymore.

[Q]: How does the sentence end?

Lawrence was aghast at what Joel told the old lady, who

[A]: Lawrence thought should be treated with respect.

[Q]: How does the sentence end?

Lawrence learned chess slower than Craig did because

[A]:
Craig thought the game was really fun.