A group of teen-agers are seated in a circle around a big skin drum , but one is standing and talking on the cellphone .
There is a better than even chance that a teenager is n't sitting with his friends because he mom just called .
There is a better than even chance that a teenager is n't sitting with his friends because he mom just called .
It is improbable that a teenager is n't sitting with his friends because he mom just called .
A teenager is n't sitting with his friends because he mom just called .