Problem: How does the sentence end?

Randy has to let their hair dye process longer than Steven because 
Answer: Randy has a lot of gray hair.

Problem: How does the sentence end?

Neil got duped by the counterfeit handbags, but Samuel knew the deal was too good to be true, because 
Answer: Neil was too trusting.

Problem: How does the sentence end?

To make the gingerbread house, we used the frostings and threw away the gummies. The 
Answer: frostings were delicious.

Problem: How does the sentence end?

Donald got an infection after the accident unlike Samuel, because 
Answer:
Samuel cleaned the bad cut.