Breakdown of La secretaria revisó doscientos correos y acabó saliendo muy tarde de la oficina.
Questions & Answers about La secretaria revisó doscientos correos y acabó saliendo muy tarde de la oficina.
Revisó is the pretérito (simple past), which presents the action as completed: she checked/reviewed the emails and that action is seen as finished.
If you said revisaba, that would be the imperfect, which would sound more like:
- she was checking emails
- she used to check emails
- the action is being described as ongoing or habitual
In this sentence, the speaker is telling a completed sequence of events:
- she reviewed 200 emails
- as a result, she ended up leaving very late
So revisó fits best.