1.They built the opera house in 1973
The Opera House was built in 1973
2.They chose Kien for the school is football team years ago
Kien chosen for the school's football team two years ago.
3.Lan passed the oral examination because she practiced speaking every day.
Lan practiced speaking every day so she passed the oral examination
4.Colecting egg shells is my brother is interest
My brother is interested in collecting egg shells
5. The tickets to the music show are too expensive for us 
The tickets to the music too cost so much money that we can't afford to buy it.
6.Her house is not the same as my house 
My house is diffrent from her house
7.We can get to the art gallery in half an hour
It only half an hour to get to the art gallery
8.Be  careful or you kill this plant .
Unless you are careful, you will hurt yourself.

1 - The opera house was built in 1973

2 - Kien is choosen for the school is football team years ago

3 - Lan practiced speaking every day so she passed the oral examination

4 - My brother is interested in collecting eggshells

5 - The tickets to the music too much expensive for us

6 - My house is different from her house

7 - It only half an hour to get to the art gallery

8 - Unless you are careless, you will kill this plant