Problem: How does the sentence end?

Donald asked Randy to make some delicious chocolate brownies because 
Answer: Randy was a very good baker.

Problem: How does the sentence end?

Elena got very good grades in school while Lindsey was constantly failing classes because 
Answer: Lindsey did not have very good study habits.

Problem: How does the sentence end?

Joe found a cloth to clean brass with vinegar to get out the rust but the 
Answer: rust was too strong.

Problem: How does the sentence end?

At summer camp, Steven beat Neil at the can crushing contest because 
Answer:
Steven was stronger.