Present Perfect and Present Perfect Progressive

Choose the correct variant. How long ... the cycle of life?

Choose the correct variant. He ... making a nesting box.

Choose the correct variant. I ... on this eco-project since two o'clock.

Choose the correct variant. How long ... for us?

Choose the correct variant. I ... to the WWF for five years.

Choose the correct variant. We ... out the pond for 3 hours without a break.

Choose the correct variant. He ... this car for 20 years.

Choose the correct variant. My team ... only two tons of cans.

Choose the correct variant. I'm so tired! We ... for hours.

Choose the correct variant. ... the lions in their natural habitat?