Why can't I paste my Comments in a Questionnaire template?

You can manually fill out and/or paste text into Questionnaire templates. Where you can paste your text will depend on how the procurement organization has set up the template.

Generally, you can paste your text into the Response and/or Comments column (subject to change).

To paste in content you can use Paste Special ... and only select Text.

You can also paste content into the Formula Bar.