Problem: Leslie got a much higher grade on the exam than Dennis because

My choice: Dennis spent a short time studying.

Problem: Jessica has recently bought a guinea pig from Rebecca, so

My choice: Rebecca wants to help her with the pig.

Problem: I wanted to grow bamboo, but didn't know if I should start with a seed or grown plants. The

My choice: seed would be harder.

Problem: Aaron showed Kenneth the new siding that he put up all by himself.

My choice:
Kenneth was proud of him.