Problem: How does the sentence end?

Neil asked for Logan's chocolate ice cream milkshake because
Answer: Logan is lactose intolerant and shouldn't drink it.

Problem: How does the sentence end?

Lindsey was annoyed because Laura was always apologizing, so
Answer: Laura apologized to her because she was so annoying.

Problem: How does the sentence end?

Brett was more sober than Samuel was because
Answer: Samuel had drank more of the wine at the party.

Problem: How does the sentence end?

Megan was training Samantha for the new management position and
Answer:
Samantha hoped to be successful.