Problem: How does the sentence end?

The janitor tried to use the spray to kill the mold but the 
Answer: spray was too weak.

Problem: How does the sentence end?

Jane wanted to make fruit juice but the noni fruit was tart, so she added honey. Because the 
Answer: noni fruit was tart.

Problem: How does the sentence end?

At the end of the class, Jason helped Lawrence because 
Answer: Lawrence couldn't think of a topic for the research paper.

Problem: How does the sentence end?

The man could drive the forklift but not the crane because the man lacked the proper license for the 
Answer:
crane .