Completar Frases what are you doing?Versión en línea You have to complete all the sentences por Alba Buendía 1 you the Yes I'm No horse I'm No in is isn't she he he she Are walking up a hill ? Yes , . Is swimming in the lake ? , she isn't . Is he riding a bike on the road ? Yes , . Are you jumping leaves ? , I'm not . Is he running down a hill ? No , . Is walking across the bridge ? , she is . Are you riding a across the sand ? Yes , .