Present Perfect + Past Perfect (simple/continuous) - rephrasing

Greta Thunberg started campaigning for environmental awareness when she was 12.

Greta Thunberg __________ for environmental awareness since she was 12. (campaign)

First, the wild animals fled, then the firefighters arrived.

When the firefighters arrived, the animals ____________ . (flee)

We are debating environmental issues in class this whole week.

We ____________ environmental issues in class for the whole week. (debate)

The polar bear swam to safety and then the rescue team arrived.

By the time the rescue team _______, _______ to safety. (arrive / swim)

The forest looked grim and bleak. It burnt the entire day.

The forest had _____________ .

They finished their project on climate change today. (use just)

They __________.

There is no solution for waste disposal according to scientists. (use yet)

The scientists _________ . (find)

Mari wrote her essay after searching for information about water shortage.

Mari __________ for information about water shortage before she wrote her essay. (search)

Autumn started fighting for the right of having clean water at the age of 13.

Autumn ________________ for the right of having clean water since she was 13. (fight)

She watched the documentary before her friends arrived.

She _________ the documentary when her friends arrived.