change these sentences into passive
1.they separated the rice from the husk
2.the boys made a fire by their camp
3.they build this house more than on hundred years ago
4.every year VietNam export millions of tons of rice
5.VietNamese people celebrate theri Lunar New year around January of February
6.After Tet holiday VietNamese people usually plant trees in theri neighborhood
7.how many festivals do you clerabate in your community?
8.how many motorbikes does Viet Nam import a year?
9. The publisher his book in 1996?
10.they repaired our desk during the weekend