Ответ:
1 Have you heard about Slavyansky Bazaar festival before? Yes,I have.
2 Have you watched the concerts on TV? Yes,I have.
3 Did you watch the opening ceremony last year? No,I didn't.
4 Would you take part in the children's song contest? No,I wouldn't.
5 Do you know anyone who participated in the festival? No,I don't.
6 Were you doing the visiting Vitebsk festival in July last year? No, I wasn't.
7 Are you going as a volunteer to the festival this year? Yes,I am.
Объяснение: