Past Perfect Progressive

Before the meeting started, we (discuss) the project for an hour.

She (wait) at the station for 30 minutes when the train finally arrived.

They (work) at the company for five years before they decided to resign.

He (study) English for two years before he moved to the USA.

The children (play) outside before it started to rain.

She (try) to reach you on the phone all morning.

We (drive) for eight hours before we stopped to rest.

He (write) his book for months when he finally got a publisher.

They (live) in Paris for a decade before moving back to Canada.

I (look) for my glasses for hours when I found them on my desk.