Englisch korrigieren bitte

Stimmen diese Sätze? Man darf nur

Present Perfect
Simple Past
Simple Present einsetzten:

I live in Las Vegas now
You do? When did you move to Las Vegas?
I moved eight months ago.
I have lived in Las Vegas since January.
Do you have a good job?
Well, first i have worked as a waitress.
Now I work for the Friendly Computer Co.
I love it!
I worked as a computer programmer for five months.
Hows your social life?

Great! Last year when I lived in Reno I was going out with Fred
But i haven`t see Fred since I moved.
Now I go out with Patricks. Hes a lots of fun.


Nun noch meine Frage.. Ich würde bei dem Satz:
But i haven`t see Fred since I moved
den ersetzen durch:
But i haven`t seen Fred since i moved.

Könntet ihr das mal anschauen und sagen wieso was falsch ist?
danke

I moved eight months ago.
I have lived in Las Vegas since January.
Do you have a good job?