Mother's Day is on the second Sunday of May.. Mother's Day is an important(重要的) day. . On Mother's Day, many children give flowers to their mothers. Mrs. Green lived in a small street. She has a flower store. People near her store are very poor.. Mrs.  Green helped them. . They clean the windows and sweep the floor(扫地). In the afternoon, Mrs. Green will give them some flowers to take home for their mothers. .