Past Perfect Continuous: Interrupted Long Action (C1)

I ___ for over an hour when she finally called back.

They ___ the archive for days when they finally came across the missing contract.

She ___ in the rain for twenty minutes before the bus finally arrived.

Marco ___ his thesis for three years when his supervisor unexpectedly retired.

The factory ___ at full capacity for months when the strike began.

We ___ for nearly an hour when the chef came out to apologise.

The team ___ on the bug for two days when one engineer spotted the typo.

Sara ___ Mandarin for six months when she got the job offer in Shanghai.

The protesters ___ outside parliament for weeks when the minister finally agreed to meet them.

I ___ along the cliff path for nearly an hour when the storm broke without warning.

The negotiators ___ the same clause for three days when the unions accepted a compromise.

He ___ as a freelance translator for almost a decade when he was offered the full-time post.

The villagers ___ water from the polluted well for years when the new pipeline finally reached them.

By that point, the orchestra ___ the same piece on tour for six months when the conductor fell ill.

I ___ for the role for nearly two years when the casting call finally came.