I.
1. My sister is not old enough to watch horror film.
2. I am going to meet headmaster tomorrow.
3. Doctors have to work on Sunday.
4. We used to go from Hanoi to Hochiminh City by train.
5. We should give up smoking.
II.
1. She warns to stay from the water.
2. My brother has studied English for 5 years.
3. My hat is different from your hat.
4. No one in the class is more intelligent than Daisy.
5. Her roses is more beautiful than the roses I bought yesterday.
