1£®A Roman writer called Pliny wrote about a terrible volcanic eruption that he had_witnessed (witness) as a young man.

2£®By 1748, they had_found (find) an awesome historical site.

3£®He had_worked (work) in the factory for five years before we moved here.

4£®The film had_begun (begin) when they arrived at the cinema.

5£®I had_hoped (hope) to meet you at the airport, but I was caught in a traffic jam.

6£®I had_meant (mean) to come, but it occurred to me that I had some work to do.

7£®There was a knock at the door. It was the second time someone had_interrupted (interrupt) me that evening.