THESE EXERCISES ARE ALREADY CORRECTED
Ex. 2?, Ex. 12?, Ex. 18? some translations?
1 In photo 2, there are two people (“persons” is very formal), one man and one woman. They are around 20 years old. In my opinion, they are in a library making a project (=trabajo) for university. In this photo these two people seem happy because they are doing well an important project.
In photo 4, there are four people, two boys and two girls. They are around 17 years old. They are in a park playing with their mobile phones. I think that they feel happy because they are chatting with their friends.