Problem: How does the sentence end?

My job didn't provide me with enough money to buy a truck, because the 
Answer: money was little.

Problem: How does the sentence end?

The boy knows how to use commas, but can't figure out apostrophes, so the 
Answer: commas are uncomplicated to learn.

Problem: How does the sentence end?

The yard of Rachel was a disaster compared to the yard of Victoria, by reason of 
Answer: Victoria being diligent.

Problem: How does the sentence end?

Benjamin was happy to show Adam a trick to sew, since 
Answer:
Adam had been doing it for a very short time.