The problem is less difficult than the exercise.
An old car is less expensive than a new one.
My story is less interesting than your story.
This painting is less valuable than the other one.
Your cousin is less graceful than your sister.
This landscape is less picturesque than the other one.
Your idea is less original than yours.
His brother is less industrious than his sister.
Our car is less powerful than theirs.
My uncle is less suspicious than my aunt.
