Problem: How does the sentence end?

James wanted to draw the cross on the paper, but there is no space for the horizontal arms. The 
Answer: paper is narrow.

Problem: How does the sentence end?

Christopher needs Ian's advice on how to create a positive classroom atmosphere, because 
Answer: Ian is an experienced teacher.

Problem: How does the sentence end?

After abandoning the hostage, the criminal hid in the alley after leaving the basement, because the 
Answer: alley was safe.

Problem: How does the sentence end?

I was going to fix my car, but I decide to sell and buy a bicycle, because the 
Answer:
car is bad for the environment.