it
US /ɪt/
UK /ɪt/

1.
used to refer to a thing previously mentioned or easily identified
:
•
Look at that car; it's brand new.
•
The book is on the table; please pick it up.
2.
used to refer to an animal or baby of unspecified sex
:
•
The cat purred as it rubbed against my leg.
•
The baby cried until it was fed.
3.
used as the subject of a verb referring to a general fact or to a situation or an action
:
•
It's raining outside.
•
It's important to be honest.
1.
the situation or circumstances
:
•
How's it going?
•
Let's get it done.