Problem: William consistently got trounced by Benjamin in tennis, because

My choice: William was just an inferior player .

Problem: Sarah asked Felicia on which medicine one should take for the flu because

My choice: Felicia was more knowledgeable.

Problem: I was unable to fit the training into my schedule because the

My choice: training was too long.

Problem: Randy was learning law from Steven because

My choice:
Randy wanted to become a new police officer.