Word/Phrase: haber sido
Translation: to have been
Pronunciation: aˈβeɾ ˈsiðo
I am glad to have been here - Estoy contento de haber estado aquí
She seems to have been very busy - Ella parece haber estado muy ocupada
They must have been waiting for a long time - Deben haber estado esperando por mucho tiempo
It could have been a mistake - Podría haber sido un error
We would have been happy to help - Nos habría gustado haber ayudado