My grandfather makes chairs in a small room behind his house. He shows me his tools every Sunday. He teaches me the name of each (11). Wood is soft, but (12) is very hard. He lets me hold the heavy (13) and hit the nails. Last week we made a small box (14). He says a good worker must be careful, not fast. I want to make a wooden chair for my mother in the (15).
Our family uses less (16) this year. We turn off the lights when we leave a room. My mother cooks with (17) instead of using an electric pot. My father does not drive to work now. He takes the (18) every morning, so we buy less (19). My little brother closes the fridge door quickly. We (20) less money every month, and the air in our city is cleaner too. My teacher says every family can help.