How many sentences are written in Present Perfect Continuous? Give the answer in number.

I have been trying to find the streets for hours.
Dima hasn't received the package yet.
The streets are all flooded. It has been raining for days.
Andrew has recently begun lessons to learn Spanish.
He has just arrived at the airport in China.
I'm very hungry. I haven't eaten since 8:00 this morning.
My cousins have won the first prize at a dance competition.
My sister has been working as a lawyer for over 15 years.