[Q]: How does the sentence end?

There was room for Kevin but not Aaron to improve their grades because
OPTIONS:
- Kevin received straight As on the report card.
- Aaron received straight As on the report card.

[A]: Aaron received straight As on the report card.

[Q]: How does the sentence end?

I wanted to buy a car that runs on electricity and not gasoline because the price of the
OPTIONS:
- gasoline is so cheap.
- electricity is so cheap.

[A]: electricity is so cheap.

[Q]: How does the sentence end?

Nelson went to the doctors office without Dennis because
OPTIONS:
- Nelson had to change the engine oil.
- Dennis had to change the engine oil.

[A]:
Dennis had to change the engine oil.