[Q]: How does the sentence end?

The steak cooked faster than the roast did because the

[A]: steak was a thinner piece of meat.

[Q]: How does the sentence end?

Angela is practicing divergent thinking and Rachel is not because

[A]: Rachel has no interest in other ways to think.

[Q]: How does the sentence end?

Dennis had more plants than Aaron because

[A]:
Dennis had more room in the back yard.