Indefinite pronouns words: someone, something, no one, nothing, anything, and anyone.
-Gerunds words: snoring, crying, screaming, ringing, knocking, banging etc.
How to play.
It’s about 4 kilometers.
It’s 7 o’clock.
It`s minus 19 degrees celcius.
It’s very quiet here.
It´s good to know that you are alive.
Introductory or preparatory subject .