alguien me ayuda por favoooooor
Adjuntos:
![](https://es-static.z-dn.net/files/dc1/b04cecf7e0f421fc395c818b5d793ac8.jpg)
Respuestas a la pregunta
Contestado por
0
Respuesta:
1) have been working / have I been working? / haven't been working
2) had studied / had david studied? / hadn't studied
3) went / did we go? / we didn't go
4) have spoken / have I spoken? / haven't spoken
5) has been / has paul been? / hasn't been
Explicación:
creo que es así
Otras preguntas