We ... walking, aren't, are, isn't, is, am, am not, We ... driving a car., is, are, isn't, aren't, am, am not, She ... watching TV., is, isn't, are, aren't, I ... painting a picture., is, isn't, am, am not, are, are not, You ... singing a song., am, am not, is, isn't, are, aren't, He ... playing the piano., am, am not, is, isn't, are, aren't, She ... dancing., am, am not, is, isn't, are, aren't, I ... making a sandcastle., am, am not, is, isn't, are, aren't.

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