Hi, Claudia!

If you have access to a Moodle platform, you can upload the exercises to it
and make links in your wiki. Another alternative to Rita's Google docs.

In the meantime, there seems to be good news re: wikis. I decided to
experiment with the pbwiki 2.0 "beta" version that I've been testing. I
uploaded a hotpot exercise (as a web page) into the "Pages & Files" section.
After the upload, I clicked on the exercise link and it opened a page with
the exercise. It's working perfectly.

This means that it will be possible and a reality as soon as the beta
version is tested. I'm one of the people who volunteered to be a tester.

Hugs, Teresa