2.i
3.ñ
4.c
No le entendí muy bien
The correct pronoun is "El" because he is a boy and he is your cousin so you have to use "El"
In my class, the clock is on the blackboard. Students' desks are in front of the teacher's desk. The bin always next to the door. The teacher in front of the students. My companions and I attentive in all classes.
