帮忙翻译一段话，十分感谢！

I have in the school bulletin board to see a poster. Above that in the April 28 school Arts Centre will have a stamp exhibition, and will display the various domestic and foreign stamps, to join us to please

I see today on the school bulletin board to a piece of playbill. Above said that the school arts center will have a stamps exhibition in April 28, and goes abroad the inside and outside each kind of postage stamp the convention, we go together?

I saw a poster on the school notice board said that there would be a stamp exhibition on 28th of May, held in the school Art Cetre.Also, different kinds of stamps at home and abroad will be shown there. Would you like to go with me?