Present perfect vs. Present perfect continous

It’s still snowing. It … (snow) for hours.

I … (attend) a swimming-pool for 5 years.

We … (know) each other since 2020.

Don’t worry, the film … (not start) yet.

Mum is very tired. She … (clean) the house all day.

Nina ... English for 2 years.

• has been learning

• has learned

The birds ... already ... to the South.

• have flown

• have been flying

David ... in his studio since 10 o’clock.

• has painted

• has been painting

Granny/knit/in the living room/ since morning.

Helen/travel/round Europe/for 3 weeks.