Problem: How does the sentence end?

Monica was able to afford a luxury vacation, but Laura stayed home, because 
Answer: Monica earned a much smaller salary.

Problem: How does the sentence end?

The events for the summer didn't fit in the calendars because the 
Answer: events were too long.

Problem: How does the sentence end?

Derrick left the room after becoming annoyed by Samuel's constant complaints about his hemorrhoids, because 
Answer: Derrick was insensitive.

Problem: How does the sentence end?

Aaron wanted his kids to practice on drum pads instead of drums, because the 
Answer:
drums were louder in the house.