Jók a variációk? Esetleg még nyelvtanilag létezik más megoldás is?

1.Megtaláltam a pénztárcát,amit júliusban elhagytam.

I found the purse which I lost in July.

I found the purse that I lost in July.

I found the purse I lost in July.

2.Miért kell mindig az ellenkezőjét állítani annak,amit én mondok?

Why do you always have to claim the opposite of that I say?

3.Ez egy olyan film,ami után nehéz elaludni.

This is the film after which it's difficult to fall asleep.

This is the film after that it's difficult to fall asleep.

4.Szeretnéd megismerni azt a lányt,akivel Bog tegnap táncolt?

Would you like to get to know the girl with whom Bob danced yesterday?

Would you like to get to know the girl whom Bob danced yesterday with?

Would you like to get to know the girl who Bob danced yesterday with?

Would you like to get to know the girl that Bob danced yesterday with?

Would you like to get to know the girl Bob danced yesterday to?

5.Mi volt annak a tanárnak a neve,aki történelmet tanított neked az iskolában?

What was the name of the teacher who taght you history at school?

6.A party jó volt,amit nem vártam egyáltalán.

The pary was fun,which I didn't except at all. (which ugye nem hagyható el?