I.
1. If I were you, I would eat more vegetable
2. More foreign tourist will come here if the environment is clean
3. What will happen if there is no woman in the world?
4. If I were his father, I would ask him to learn English better
5. If there is no war on the earth, people will live peacefully forever
6. Flood won't happen so regularly if people did't cut down so many trees
7. If they tell their father, he will be very angry
8. She would spent a year in the USA if it is easy to get a green card
9. If I live lonely on the island, I would be very sad all day
10. My brother would buy a sport car if he have enough money
II.
1. Richard is not old enough to see the horror film
2. Don't forget to turn off the fan before leaving the room
3. What an intelligent man!
4. I was intended to come over to pick you up
5. My sister has long black hair
6. The supermarket isn't far from Trung's house
7. Alexander G. Bell was the enventor of the telephone in 1876
8. I'll give you a call tomorrow morning
9. Let's go to the theatre tonight
10. She used to live on a farm, but she doesn't any more