The past perfect continuous tense describes an action that was ongoing in the past and continued up to another point in the past or ended shortly before it. If we remember how the present perfect continuous tense is used, this lesson will be very easy for you. And like other perfect continuous tenses, this tense focuses on the duration or continuity of the action before the past event.
1. we / discuss / the issue / when the manager entered the room
2. she / jog / every morning / before her injury
3. he / think / about the problem / when the solution came to him
4. I / practice / the piano / for hours before the recital
5. My father / wait / for hours / before the doctor checked on him
