Translation of je

I counted the bills and saw that ten thousand Lire were still missing. The old man return to the children, grabbed the oldest one for a second time and hit him again. A minute later he came back with the missing.
But I guess that most children are that way. Maybe there are a few children that really want to be educated, but I think that these children grow up to fast. They need to enjoy their childhood.
As soon as I went to bed, incredibly loud music starting playing from right beneath my room. The music was so loud that I could not fall asleep despite my jet lag and despite being extremely tired.