[Q]: How does the sentence end?

Though they both owned guitars Rebecca actually played while Amy didn't because

[A]: Amy didn't know how to read music.

[Q]: How does the sentence end?

Emily didn't make their home hurricane proof but Rachel did, so

[A]: Rachel suffered a small amount of loss during the storm.

[Q]: How does the sentence end?

Kevin liked to prune the roses but Dennis said they preferred not to.

[A]:
Dennis was very bad at gardening.