[Q]: How does the sentence end?

Elena thought Lindsey was overbearing, because

[A]: Lindsey tried to drag them along to all the exciting rides and convince them to get on.

[Q]: How does the sentence end?

Carrie nearly flunked a physics exam and asked Laura for help because

[A]: Carrie needed expert advice.

[Q]: How does the sentence end?

The new paint won't fit in the box because the

[A]:
box is too short.