| A. How B. How tall C. with D. How many E. How long |
—I'm 160 centimetres tall.
—She is not very well.
—It takes more than one hour.
—Four.
Lu Ban was a famous craftsman in China a long time ago. His father was a craftsman, too. He usually worked with his father and learned a lot from him. One day he worked on a mountain. His hand was hurt by a leaf.
He found many teeth on the leaf and the teeth were very sharp. He thought he could make a tool with teeth to cut things quickly. That was a saw. People still use the tool today.
