I/
1. The speech is delivered by Mr Tuan yesterday.
2. The computer is turned off at night
3. The floor is cleaned everyday
4. this dress was bought by my mother this morning
5. This exercise was done two days ago.
6. He was sent abroad to study chemistry.
7. This room hasn't been used for a long time ( nobody = phủ định)
8. My bike has been stolen.
9. A letter has just been received from his parents.
10. This house will be bought.
11. My house is being built
12. My new dress was being made by Lan at this time yesterday.
II/
1. Have you sent that letter yet ?
2. Nile river is the longest river in the world.
3. Hoa's salary is higher than Tom's
4. He works hard in order to pass the exam.
5. Early this morning, the children decided to go a run.
6. Sysney opera has been completed in 1973.
7. The road joining two villages will be very narrow
8. It is not difficult to translate this sentence in English
9. Do you mind lending me a dictionary?
10. New bicycles which are made in Japanese are very expensive
11. Have you seen the film of Jurassic Park yet?
12. The Mekong river is longer than the Red river.
13. Ba is more intelligent than Nam
14. Scars Tower is shorter than PETRONAS Twin Towers
15. Mexico city is the biggest city in the world.
16. Ba is the best student in our class
Học tốt nha em !!