Answer:
He had been working in Mumbai for the past five years. I saw him.
Explanation:
The Past Perfect Continuous has the following structure:
Subject + had + been + main verb -ing
It is used to talk about actions that started and continued for some time in the past, but that are now over. This tense is used to emphasize the duration of the action, to emphasize that it lasted for a while. It is commonly used with the help of "for" or "since". Examples:
- Daniel had been arguing with his brother since 8:00 in the morning. They finally stopped when their mother called them to have lunch.
- I had been studying for three years when my I was offered my dream job.
