Hello.
11.The office was cleaned by Jack two days ago.
12.The plants weren't watered by Mark.
13.Sushi is eaten in Japan by people.
14.Orange juice was drunk by Mary.
15.The car was bought by Tom.
16.The meeting will be organized by Stephen.
17.English is spoken all over the world by people.
18.Rubbish should be segregated by people.
19.Tea is grown in India by people.
20.Avatar was directed by James Cameron.
Pozdrawiam
Miłego dnia :)