Problem: How does the sentence end?

Emily was good at playing music while Erin was not, so
Answer: Erin started beginner lessons.

Problem: How does the sentence end?

The cat liked playing with the ball of yarn but not the ball because the
Answer: ball was boring.

Problem: How does the sentence end?

Matthew is thinking of starting a car club and asks Leslie to join, but he can't.
Answer: Matthew has sufficient free time.

Problem: How does the sentence end?

The quickly learned that it was better to cook ramen noodles in the microwave instead of the oven because the
Answer:
microwave cooked the noodles quickly.