Reviewing test answers with students using a Course Management System
I'm assuming the following:


Students are taking an online test, with questions entered into the LMS
The LMS produces some sort of visual output
You meet with students face-to-face


I've used our in-house LMS, Moodle and Coursera. In all cases the software offers the students randomized versions of the questions, but produces a view for the instructor that shows student responses that are aggregated (sample given at end of post).
If my assumptions are true, you can pick perhaps the three most often missed questions from the test, make a screenshot, and present this to the class.
Or better yet, offer an often-missed question on a slide and have students work in groups to provide a higher-quality group answer.

We might be able to help you more if you correct my assumptions and provide which LMS you are using.

Sample screen shot: