Troubles creating a form with lots of check boxes

I'm trying to create a form with lots of check boxes and the importer isn't treating it correctly.

The form is a listing of tasks to be performed and on which days they should be performed. It looks something like this:

My Word document is a table with an actual box where the word "checkbox" appears above. There is no text next to these boxes. (If you think about it, it'd be silly in this application.) I just want the users to be able to click the box to indicate the task should be done that day. I do not need to have the checkboxes labeled, but it seems that's a requirement. I certainly don't want that label visible to the end user.

I can't use radio buttons because multiple days can be selected (unless multi-select is an option on radio buttons).

Please help.

Thanks