[Q]: How does the sentence end?

The man gave Joel a lot of plants and not Matthew, by reason that

[A]: Joel loved them.

[Q]: How does the sentence end?

The rock store of Christopher was more successful than Brett's because

[A]: Brett had worse crystals in stock.

[Q]: How does the sentence end?

Brian loaned their phone to Neil because theirs broke, and

[A]:
Brian was thanked for being so generous.