One option is to create a custom dialog since there are so few items. It could contain three radio buttons, each next to the three different phrases, allowing the user to select one of the three. It could be triggered by a small button that you'd place where the dropdown icon of the dropdown field would normally go and be set to display but not print.
Custom dialogs can get somewhat complicated, but one for this wouldn't be too bad. If you'd like a sample, I could post one (probably tomorrow).