Problem: How does the sentence end?

They did a lot better at the vocabulary compared to the grammar, because the
Answer: grammar was more difficult.

Problem: How does the sentence end?

The toilet was closed for repairs which angered Cynthia but not Tanya as
Answer: Cynthia desperately needed to use the bathroom.

Problem: How does the sentence end?

Angela did not have dark circles under her eyes, while Rachel did, because
Answer: Rachel got too little sleep most nights.

Problem: How does the sentence end?

Running is not something that suits Aaron, but Randy runs every day, so
Answer:
Aaron is out of shape.