Problem: Mary put away the balls and grabbed the rings, because the

My choice: rings were required for the game.

Problem: The stones that I found at the beach were worse than the rocks I found earlier, because the

My choice: rocks were rare.

Problem: The ropes in the gym class didn't reach the mats because the

My choice: ropes were too short.

Problem: Lawrence wanted to teach calculus while Derrick wanted to teach comic strips because

My choice:
Derrick was a fun teacher.