Write the correct comparative.

1 A: This top is too big for me. I nees a ...............(small) one.

B: I'm sorry, this is the ............ (small) size we have.

2. Tom is always smiling. He is the ...............(friendly) person i know.

3. This book is ............ (defficult) than the one we did last year.

4. When the traffic is heavy, it is ..............(easy) to walk to work than drive my car.