Problem: How does the sentence end?

The pistol was quieter than the shotgun when fired because the 
Answer: shotgun was more powerful.

Problem: How does the sentence end?

Lawrence was afraid to mess with electricity, while Adam was adept with it, so 
Answer: Adam would fix the fuse box.

Problem: How does the sentence end?

Craig helped Brian study for the upcoming chemistry test because 
Answer: Brian was feeling very stressed about it.

Problem: How does the sentence end?

Charlotte had to take her laughing child out of the playhouse because the 
Answer:
playhouse was very quiet.