Problem: How does the sentence end?

The speech could not be heard at the back of the hall because of the noise outside. The 
Answer: noise is close.

Problem: How does the sentence end?

The gun was pointed at Felicia but not at Laura , so 
Answer: Laura knew she was safe from being shot.

Problem: How does the sentence end?

Derrick tried to find a new apartment, so he asked Donald because 
Answer: Derrick needed some help.

Problem: How does the sentence end?

Monica liked to recycle but Samantha couldn't care less about it, so 
Answer:
Samantha didn't make a compost pile.