[Q]: How does the sentence end?

Elena gave the Academy award to Rebecca because

[A]: Rebecca was the winner of the award.

[Q]: How does the sentence end?

The educator chose to teach at the elementary school rather than the high school because the students were older at the

[A]: high school .

[Q]: How does the sentence end?

Nelson was making lemonade and couldn't reach the squeezer in the high cabinet so asked Jeffrey to get it for them.

[A]:
Nelson is shorter.