[Q]: How does the sentence end?

When Christine went to buy Christmas presents at the department store, Carrie helped them ring up their purchases.

[A]: Carrie is a salesperson.

[Q]: How does the sentence end?

Ryan ran over Ian's guinea pig with his car, causing

[A]: Ian to feel a great deal of pain.

[Q]: How does the sentence end?

Joel had to borrow dish liquid from Kyle because

[A]:
Kyle had went to the store when they were in stock.