Problem: How does the sentence end?

Cynthia gave Tanya a free manicure on their birthday, because 
Answer: Tanya was a valued shop customer.

Problem: How does the sentence end?

Mary gave the remote to Monica because 
Answer: Monica wanted to change the channel and watch a different tv show.

Problem: How does the sentence end?

Eric was disoriented after Logan spun them in circles, so 
Answer: Logan observed as they tried to run a straight line.

Problem: How does the sentence end?

Jill could not finish his speech at the seminar within the time given to him because the 
Answer:
speech is long.