The pen is beautiful
Quality adjective
That pen is mine
Demonstrative adjective
Which pen is mine?
Interrogative adjective
It’s a beautiful pen
Quality adjective
Those girls are jumping.
Demonstrative adjective
What time is it?
Interrogative adjective
Your boots are dirty
Possessive adjective
Mia is smart
Quality adjective
That book is from the library
Demonstrative adjective
Our book is at home
Possessive adjective