1/ - Would you like a cup of cofee? - Yes, I would like one.
2/ - Will you give me some apples? - Green or red ones?
3/ I would like to try on one of these hats. Please, give me the blue one.
4/ These flowers are better than those ones.
5/ Here are some pictures. Which one would you like?
6/ Two gentlemen entered the room. The first gentleman was young, the second one was old.