Provide user with text he can paste in text entry box

I am building a quiz where the student has to insert punctuation in a text. I'm using a Text Entry freeform question in SL360.

The slide comes up with a text box containing the text without any punctuation. The student has to write the text in the answer field with the correct punctuation. 

I don't want the student to rewrite the whole text, because it will be a pain for the student and mostly because there is too much potential for typing mistakes.

I thought I would instruct the student to copy the text and paste it in the answer field and then add the punctuation, but it is not possible to copy text on a slide.

My question is: how to provide the basic text to the student, so he can paste it in the answer field and add punctuation? 

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