Respuesta:
A: Pedro is eating lunch in the cafeteria
B: They are speaking english in class
C: Helen is playing the piano
D: The students are preparing the homework
E: Isabel is visiting her grandparents
F: The cat is climbing the tree
G: I'm waiting for Elena on the corner
H: The teacher is correcting my exercises
I: My dog is playing with your cat
J: My sister is listening to music in bed
Explicación:
