That's great ! We made 20 minutes earlier .   Good thing , we took a taxi .   Mom , you are the best !   Hey , look there . It is an advertisement of the piano training class on the billboard . The place is not far from our home .   Mom , come on . What are you thinking about ?   Your sister is in high school now ; no one plays the piano at home .   Don't tell me you want me to do that ?   Why ? Why not ! The piano is right there . 