[Q]: How does the sentence end?

Mary was home schooled, unlike Betty, so

[A]: Mary was unfamiliar with the layout of the school building.

[Q]: How does the sentence end?

Kenneth maintained concentration while Ian was constantly distracted, and therefore

[A]: Ian wrote an uneven paper.

[Q]: How does the sentence end?

Monica has much better handwriting than Felicia because

[A]:
Felicia never took the time to practice their cursive skills.