5.VietNamese people celebrate theri Lunar New year around January of February

=> The Lunar New Year is celebrated by Vietnamese people around January of February.

6.After Tet holiday VietNamese people usually plant trees in theri neighborhood

=> After Tet holiday, trees are usually planted in their neighborhood.

7.how many festivals do you clerabate in your community?

=> How many festivals are celebrated in your community?

8.how many motorbikes does Viet Nam import a year?

=> How many motorbikes are imported by Vietnam a year?

9. The publisher his book in 1996?

=> His book was published in 1996

10.they repaired our desk during the weekend

=> Our desk was repaired during the weekend.