Google Pages do not support adsense adverts ???

I have tried getting a few advertisements onto my Home Pages through my affiliation with Adsense and I was dissappionted to find that I can't have this thing here in Google Pages. The HTML code I paste here gets deleted as soon as I save it. Or maybe some other thing happens to it which I am, as a novice with HTML and related stuff, not aware of.

I used to find freeservers more rigid but they support this kind of work on their pages. I hope Google keeps up with it's reputation of synthesising their products as per the needs and luxuries of the users. I will be waiting for more from Google !!!