Problem: Kenneth wanted his aquarium to be as good as Adam's aquarium, because

My choice: Adam aquarium was inhabited.

Problem: Angela was able to recover from the flu faster than Betty, because

My choice: Betty did not have a healthy immune system.

Problem: Lawrence used their new camera to take a picture of Joseph, because

My choice: Lawrence really wanted to snap a shot.

Problem: Homework was easy for the smart Laura but not for Jessica as

My choice:
Jessica was very stupid.