Respuesta:
Dave: Hi, Mom.
Mom: Dave! (1) Are you walking (walk) home now? ?
Dave: No, I'm not.
Mom: What (2) are you doing (do)?
Dave: I'm at Paul's. We (3) are listening (listen) to music, and we
(4) are playing (play) video games.
Mom: Well, don't be late!
Explicación: