Explanation:
The main difference is respect! Here in the U.S we would just say hi from a distance or do some type of handshake, and would be "very wierd" for someone here in the U.S to greet someone giving them a kiss on the cheek! It all just comes down to the lack of respect the U.S has and implements on us.
1. Usted no llegara tarde a la clase
2. Usted no va a gritar en la escuela
3. usted bno va a posponer las cosas
You would use the ellos/ellas conjugation so it would be “son”- they are
The answers is c :le dijeron