She ... swimming., is, isn't, are, He ... singing., am, is, aren't, They ... swimming., is, are, am, She ... swimming., is, isn't, aren't, She ... skipping., are, am, is, He ... playing tennis., are, is, isn't, He _____ rollerblading., is, aren't, are, It ... flying., am, is, isn't, It ... sleeping., aren't, isn't, is, They ... sleeping., isn't, are, aren't, They ... swimming., are, am, is, She ... running., aren't, is, isn't, He ... dancing., am, isn't, is, They ... reading., aren't, is, are, She ... playing., is, isn't, am.

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