The bag is lily's,it's（ ）括号里应该填什么

The bag is lily's,it's（ ）括号里应该填什么
The bag is lily's,it's（ ）括号里应该填什么

The bag is lily's,it's（ ）括号里应该填什么
hers
It is hers.它是她的
hers=her bag 代替lily's bag