Well I Have two favourites which i think are the best and they are:
The Sims 2 Pets
The Sims 2 Seasons
SimsTM 2 Seasons.
It's a Sims 2 expansion pack so you need Sims 2.
There Is not an expansion pack for the sims 2 that comes with, or requires a microphone. Sorry
It is an expansion pack for the Sims 2.
Well you can't just have sims 2 expansion pack, you have to have the original Sims 2 before you can play and expansion pack
Pets is an expansion pack.
No you can't you need the expansion pack to play it.
The first expansion pack was University.
you have to get the expansion pack, Sims 2 Pets.
The sims 2 pets(but i am pretty sure that you can become a teacher in every expansion pack)
No
The Nightlife expansion pack.