Answer:
1. El señor león ENCIENDE la luz.
2. Yo PIENSO en mis clases.
Estoy en el décimo grado de la escuela secundaria.
Can you put in a picture ?
The correct answer is aquella, because we would use the word if there was a difference in the distance. Like if you were in the right corner of a room, and the guitar was at the left corner of the room. And another reason is because aquella is feminine and in spanish, guitar is feminine.
