Problem: How does the sentence end?

Julie emptied the water bottle into the cup on her desk until the 
Answer: bottle was empty.

Problem: How does the sentence end?

Since Tom heard a noise when he applied the brake, he decided to fix the caliper rather than the rotor, because the 
Answer: rotor was silent.

Problem: How does the sentence end?

Angela thought they were more beautiful than Amy because 
Answer: Amy had shorter eyelashes on their eyes.

Problem: How does the sentence end?

Samuel taught Matthew how to calm his overactive mind because 
Answer:
Samuel had successfully done so in the past.