Problem: How does the sentence end?

Ian helped Steven carry a mattress up the stairs since 
Answer: Ian is a very strong person.

Problem: How does the sentence end?

Joseph decided to groom their dog in the waiting room unlike Leslie, so 
Answer: Leslie had the dirtier dog.

Problem: How does the sentence end?

Christine was working online on the computer that Mary dropped a bowling ball onto. 
Answer: Mary  broke the computer.

Problem: How does the sentence end?

Kim was falsely accused of theft at the store and not the police station because the people at the 
Answer:
store wouldn't give proof.