Срочно! Один специальный вопрос и один общий вопрос к каждому предложению

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1.Does this sight attract tourists and locals who go outside to enjoy it and celebrate?Which sight attracts tourist and locals who go outside to enjoy it and celebrate? 2.Do crowds of people sing and dance by the Neva river at night?When do crowds of people sing and dance by the Neva river? 3.Do they watch the bridges open as boats pass by and fireworks fill the sky?What do they watch? 4.Is a visit to Saint Petersburg a fantastic experience during that time?When is a visit to St Petersburg a fantastic experience?