1. They built this old church nearly 200 years ago.
This old church was built  nearly 200 years ago.
2. "I don't like wearing jeans at school" Nam said.
→ Nam said that he didn't like wearing jeans at school
3. It isn't easy for students to do this test.
→ Students have to do this dificult test 
4. We were disappointed because he behaved badly.
→ Because of his bad behavior , We were disappointed
5. It is the first time he has been to Vietnam. (before)
→ Never  has he been to Vietnam before