Нужно вставить правильные слова. Hallo, Mary! Would you like to know what I(had seen, saw) yesterday? You(shan't, won't

Hello, Mary! Would you like to know what I saw yesterday? You won\'t believe but I was at the performance of the Indian folk-dancers. It was very difficult to get tickets, you know. Anyhow I was lucky enough to get them. In fact I had the exciting evening. Indian dancers are so beautiful and colourful. According to a legend the first Indian dancer was god Brahma and originally it was not shown to the public . But now they have very many dancing companies touring all over the world.