[Q]: How does the sentence end?

When Aaron won a gold medal Donald was jealous because 

[A]: Donald had never won a gold medal before.


[Q]: How does the sentence end?

Hunter lent Joel his lucky rabbit foot because 

[A]: Joel was nervous about asking his crush to the prom.


[Q]: How does the sentence end?

At the park playing basketball, Michael wanted to pass Brian the ball because 

[A]:
Brian was open.