Completar frases what are you doing?Versión en línea You have to complete all the sentences por Alba Buendía 1 you I'm in isn't I'm she Yes is the horse No she he No he 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 , .