Form: she had (she'd) been waiting.
We use the past perfect continuous to refer to a situation or activity that took place before another even in the past, e.g.:
![]() | When my sister got to the front of the queue, she had been waiting for two hours. (Cuando mi hermana llegó al comienzo de la cola, llevaba esperando dos horas.) |
![]() | When we arrived, Anne was in overalls because she had been cleaning the cellar. (Cuando llegamos, Anne iba vestida con un mono porque había estado limpiando la cueva.) |
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