Fill in the Blanks what are you doing?Online version You have to complete all the sentences by Alba Buendía 1 Yes he No in No she I'm you the I'm horse isn't she is 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 , .