@dazzling-salesclerk-18012 I made a practical example with a little more control that I think will work for you. First create a table to store my sentences

this is the execute card in the second node 👆🏻

I'm going to show you working on the emulator. The third node only has a continue button to go back to the node and get another statement without repeating it.

Note that each response is a statement saved in my table and that each iteration with the node contains a function that outputs a statement without repeating it.

Of course, this is an example that I think you can start with, depending on the number of sentences you handle, we can do another way, however the use of a table is indicated for you, since you can not only save the sentences but also relevant information about each one, such as its level of difficulty, size, etc. So you can filter your statements more interestingly (as I did in the first node, but it is without filters in the example)

I hope I have helped you, if you have any questions let me know we are here to help you