[Q]: How does the sentence end?

Natalie ordered a mojito from the bar but Rachel just had a Diet Coke.

[A]: Rachel had to drive home that night.

[Q]: How does the sentence end?

Erin is rated as the better concierge when compared to Kayla, so

[A]: Erin has probably done it for a greater number of years.

[Q]: How does the sentence end?

In Nevada, Cynthia wins more at the slot machines than Jessica because

[A]:
Cynthia is luckier.