Problem: How does the sentence end?

Monica did all they could to prevent Sarah from going, but 
Answer: Monica was unable to stop them.

Problem: How does the sentence end?

Billy wanted his room painted the color pink but dad made him chose blue because he said the 
Answer: pink was for girls.

Problem: How does the sentence end?

The case was supposed to fit the firearm, but it didn't because the 
Answer: case was too short.

Problem: How does the sentence end?

The large wooden cutting board did not fit into the kitchen sink because the 
Answer:
cutting board was too large.