After 'It's time', we use the unreal past (click here).
That should be 'It's time Jane packed up her things and went home'.
Interested in Language
- It's time Jane packed up her things and go home.
In the above sentence, I thought the answer is 'packs', but i was wrong. It is 'packed'.
Why is it 'packed'?
I'd accept "It's time Jane packs up her things and goes home", too.