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You shouldn't bring your pets to school, [should you|shouldn't you|do you|don't you]?

She told us nothing, [had she|hadn't she|did she|didn't she]?

Helen and I want to go shopping together, [is she|aren't I|do we|don't we]?

If we had more time, we'd go in for sports, [did we|didn't we|would we|wouldn't we]?