Problem: How does the sentence end?

The sound from the train was louder than the sound from the car because the 
Answer: train had a bigger engine.

Problem: How does the sentence end?

Carrie needed to twist backward to talk with Monica because 
Answer: Monica was behind of her.

Problem: How does the sentence end?

Since Jennifer was in need of clothing while Natalie had extra, 
Answer: Natalie gave clothes to the thrift shop.

Problem: How does the sentence end?

Amy bought a used dryer from the thrift store. The dryer was dropped off by the 
Answer:
thrift store to her house.