Problem: How does the sentence end?

Jeffrey hired Michael to clean their floors but 
Answer: Michael was going on a long vacation.

Problem: How does the sentence end?

I loved my old comb better than my new brush, because the 
Answer: comb was much sturdier.

Problem: How does the sentence end?

Craig was never going to be as good a dentist as Kyle because 
Answer: Kyle is fascinated by teeth.

Problem: How does the sentence end?

Kevin took very difficult courses in university not like Ian, because 
Answer:
Ian was studying lazily.