hi!, i was helping a friend with a writing and she wanted to say (esta abierto desde 1993 for those who speak in spanish) and i told her that she had to put "it has been open since 1993" and it led to a terrible discusion because she said it was "it has been openED since 1993" and i hadn't been able to sleep since then because i'm sure that it is "it has been open"... can u help me... tell me if i'm right or wrong and if i'm right how can i explain that to her
thanks in advance
thanks in advance