It's just what I wanted!
It's just as I thought!
2.Just as good, nice, easily...
You're just as good as anybody.
He's just as attractive as his brother.
3. Just have done something
I have just finished work.
I have just arrived home.
4.Only I just needed a drink.
I just want to talk to you for five minutes.
5.At this/that moment;
Now I'm just off.
I'm just finishing my homework.
It was just not my lucky day.
Lunch was just delicious!
I've decided to learn English just for fun.