Problem: How does the sentence end?

The scientist used the microscope to study the butterfly instead of the beetle. The 
Answer: beetle was too wide to fit on the slide.

Problem: How does the sentence end?

The car engine outperformed the bus engine simply because the 
Answer: bus was inefficient during the test run.

Problem: How does the sentence end?

Lawrence knew how to mix soap and water better than Jeffrey because 
Answer: Lawrence had a lot of chores that involved cleaning.

Problem: How does the sentence end?

Leslie is known to be a rude person as compared to Christopher because 
Answer:
Christopher has a kind heart.