Alright, so I know the answer to the riddle in the riddle room in Zork II. But how do I answer it?

I'm just going to warn that I'm posting the answer to the riddle.

So I know the answer is 'well' but if I just type 'well' or 'a well' it won't recognize it. Not if you say 'answer a well' either. So I'm assuming you need to mark it with quotation marks like 'answer "a well" ' but how do I make quotation marks in Zork II?
If I hold shift and press 2 I get an @. I thought once that I got something that looked like a " but the game didn't recognize that either.

Thanks!

No problem ;)

I'm having this same problem and I still can't seem to be able to get quotations.

Uh, your profile says "From United States". The quote, ie: ", is right next to the enter key and you use shift with it. And indeed it works in the DOS version of Zork/II/III (that GoG uses). If you are using another version (Apple or Commodore) then you would have to look up how the emulator uses a modern 101key keyboard. On C64 emulators, it is usually shift-2 (which is what it was on the original C64 keyboard layout). On AppleWin emulator it seems to use the modern 101-key keyboard as is. Shift-key next to enter.
Some C64 emulators you can configure to mostly use keys on modern keyboard as is, except a few special ones.