Problem: How does the sentence end?

Leslie is being showed how to use Firefox by Jeffrey. 
Answer: Leslie is likely more incompetent at technological things.

Problem: How does the sentence end?

Jeffrey didn't have to buy clothes for the ski trip but Nelson did because 
Answer: Jeffrey lived in a cold environment.

Problem: How does the sentence end?

Craig borrowed a jacket from Adam during the winter holidays. 
Answer: Craig was feeling very cold.

Problem: How does the sentence end?

The man with cancer chooses surgery over chemo based on his doctor's advice. 
Answer:
surgery must succeed more in cases like his.