Problem: How does the sentence end?

Their mother trusted Derrick over Dennis with the car because 
Answer: Dennis was more reckless when driving.

Problem: How does the sentence end?

Derrick was a qualified teacher but Matthew was not as 
Answer: Matthew was indifferent to their profession.

Problem: How does the sentence end?

Felicia is really attracted to Katrina due to 
Answer: Katrina having very strange looks for a woman.

Problem: How does the sentence end?

Natalie became much weaker than Betty after 
Answer:
Betty spent a year in the gym doing strength training.