Problem: How does the sentence end?

Tim decided to swap coffee with tea as he has read that tea contributes towards losing weight. The 
Answer: tea is the best option for losing weight.

Problem: How does the sentence end?

A cough rose from Chad's lungs because the 
Answer: lung was afflicted by the serious sickness.

Problem: How does the sentence end?

When at the bookstore, Emily bought a comic book for Natalie because 
Answer: Natalie liked the surprise.

Problem: How does the sentence end?

During a job interview, Matthew asked Christopher about their prior jobs because 
Answer:
Matthew wanted to know.