----Have you finished reading the book ________? ----Yes. I have ________finished reading it．

My mother is working so        that she can       have any time for me．

Though they are far away from school, the children who live in mountains ______ go to school on foot.

—Please drive ______ when you pass a school.—OK.

—Did you find the small village yesterday?—Yes，without any difficulty，for it has ________ changed over years.