Переделайте предложения из действительного залога в страдательный.
1 Somebody wrote the book n 1956.
2 They arrived at the hotel late at night.
3 More than 20000 Native Americans came to the American continent from Asia.
4 Indian song and poems helped them to remember their traditions and history.
5 They sent letters yesterday.
6 They found the key in the park.
7 Mother baked a tasty cake yesterday.
8 People decorate their houses for Christmas.
9 They build a lot of houses every year.
10 My dad reads this newspaper every morning.