1) I wanted to go to the shop but it was closed.
2) This interesting book was sold in the Bookshop.
3) The picture was painted by my elder sister.
4) When I went out I remembered that the windows were opened.
5) My shoes are made of natural leather. (*skin - это кожа существ (наша или животных), а материал для изготовления вещей - это leather)
6) English language is spoken all over the world.
7) My favourite book is called "Gulliver's Travels".
8) The president of the USA is elected by the people.
9) Pop music is heard by many young people. (*тут более уместно сказать is listened to)
10) When I don't go to the office my flowers are watered by the secretary.