Problem: How does the sentence end?

Donald asked Steven to go play baseball with him because he has an extra ball and
Answer: Donald doesn't have one.

Problem: How does the sentence end?

Robert bought a pet hamster for Adam because
Answer: Adam wanted to get a great gift for Christmas.

Problem: How does the sentence end?

James gave away his computer but kept his laptop because the
Answer: computer was worth less.

Problem: How does the sentence end?

Benjamin did not want to do his homework so he went out to play with Christopher.
Answer:
Christopher told him to do his homework.