Lily and Lucy are twins .They look like each other very much so that all the other people can not tell them correctly.
Now they are old enough to go to school and they enjoye their school life . But there is a big problem for their teacher who always call them wrong .
One day ,the teacher had an idea and asked them :" how could your parents tell you two ?"
The little girls smelled and said :" it''s very easy !we have different names !"