Correct the mistakes in the sentences.
36. Enzo shared his photos from Singapore; he was hoped to make his friends jealous.
37. While we were waiting for the bus, I was seeing a poster for tours at the art museum.
38. Giovanni has been studying English for many years before he moved to Canada last month.
39. Julia`s examining the painting with great interest because she`s studying art history at university for 3 years.
40. My cousin had visited Hong Kong two years ago.