How to replace typewriter (straight) apostrophe with typographic (curly) apostrophe?

I have a manuscript I got off the Internet that has a bunch of isn?t's and wasn?t's and the like—due, I assume, to some miscommunication between MS Word's automatic curly quotes and the ASCII limits of ISO Latin 1. I tried doing a find-and-replace to put typographic apostrophes in place of the question marks. Pages found the question marks and put typewriter apostrophes in place of them, though I'd carefully entered a typographical apostrophe ((opt-shift-]) in the Replace field. So I tried again, to replace the typewriter apostrophes with typographical apostrophes. Pages now replaced the few typographical apostrophes I'd manually entered with typewriter apostrophes. Well, at least it's consistent. So far as Pages, Apple's flagship word-processing/page-layout app is concerned, there's apparently no such thing as a typographical apostrophe—something that was understood, as I recall, by the original MacWrite 25 years ago. So do I have to go back to doing all my editing in TextEdit (which seems to be much better at text work than Pages), or can somebody tell me how to persuade Pages to take care of this trifling little task correctly?