all items spawn randomly throughout dungeons your best bet is to search for wonder mail codes or download a wonder-mail generator which rewards you with one.
Use another cleanse orb.
You find it in Lost Tower (some ghost Pokemon if you catch them hold a cleanse tag as well).
you can find the answers at serebii.net
Simply, find the Pokemon you are supposed to rescue. Be sure to remember what floor they are on! When you spot the Pokemon walk up to them, and press the a button to talk. Yeah, that's pretty much it!
i dono how to get celebi
the first
It is impossible to find a thunderstone in Pokemon blue rescue team. There is not one. I've searched everywhere. If I had not known that there was not one, I'd check Thunderwave Cave.
then all your Pokemon will die
it's the same as the pokemon mystery dungeon red rescue team. you can find mewtwo in the western cave once you recruited ho-oh.
Silver trench 99f
Find him and talk to him.
He is on Pokemon Tower..after you rescue him, he stays in his home in lavender town.Lavendar town/tower
You should google it,you may find it there.