Problem: The plant was easier to take care of than the tree because the

My choice: tree needed more attention.

Problem: The ball smashed through the glass while the rock bounced off, since the

My choice: rock was a deficient missile.

Problem: My headache lasted a much longer time than my stomachache did because the medicine didn't affect the

My choice: headache .

Problem: Joel preferred to drive when Christopher was in the car, since

My choice:
Joel was a very steady driver.