Problem: How does the sentence end?

More art was sold by Steven than Christopher at the art gallery due to 
Answer: Christopher being the more inferior art dealer.

Problem: How does the sentence end?

Neil always had to buy diapers while Derrick never did because 
Answer: Neil had many children.

Problem: How does the sentence end?

Kayla was accused of shoplifting but has always been a law abiding citizen, as Jessica will attest. 
Answer: Jessica is eager to help.

Problem: How does the sentence end?

Katrina painted a rainbow on the walls in her room but Kayla didn't because 
Answer:
Katrina likes to see colors.