Just be mindful about which section you're doing. Plus, the row of bubbles before the section you're doing will be filled, and just keep in mind to bubble in the section right after the ones that's already bubbled in
@brennan said: I would like to cover the bubbles from previously-completed sections while working, to minimize the probability of accidentally mis-bubbling.
This you definitely cannot do. To your first question, I'm honestly not sure.
You can always bring two of the long white erasers to cover the last section you bubbled. Those are allowed you can use them however you want. They just can not have sleeves.
Comments
Just be mindful about which section you're doing. Plus, the row of bubbles before the section you're doing will be filled, and just keep in mind to bubble in the section right after the ones that's already bubbled in