Today, there are still 40 _______ children needing help for education.
Some volunteers from Beijing arrived in Shanghai _____ April 29 to work for the World Expo.
Tom and Mike are good friends. _____ often help each others.
Her father often _______ to work on foot. But yesterday he ________ a bike.
--- _______ do you have piano lessons?--- Once a week.
--- How did you go home yesterday ?--- My father when he drove past my school .