Problem: How does the sentence end?

Kyle bought hamsters for the children, which annoyed Leslie because 
Answer: Kyle did not know how much work they are.

Problem: How does the sentence end?

While trying to maintain a healthy diet Jim decided to eat bananas but ignored apples because the 
Answer: apples were less preferred.

Problem: How does the sentence end?

The nails that I bought to construct the desks did not work, because the 
Answer: desks were too strong.

Problem: How does the sentence end?

Mary had an easier time cleaning LEGOs than Patricia because 
Answer:
Mary enjoyed cleaning small pieces.