[Q]: How does the sentence end?

Dennis wanted to teach biology, but Lawrence thought he should teach chemistry so

[A]: Lawrence relented and let him teach biology.

[Q]: How does the sentence end?

I made a new feeder for the backyard that had a small opening for the food.They couldn't get through it because the

[A]: food was too big.

[Q]: How does the sentence end?

Neil had more discipline than Lawrence did so

[A]:
Neil was able to pass all of their classes.