alguien me ayuda por favoooooor
Adjuntos:
Respuestas a la pregunta
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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
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