To have a better understanding of this topic, you may find this information useful:

https://myenglishteacher.co.uk/2022/06/12/questions-with-prepositions-at-the-end/

Now practice with these exercises and games:

https://wordwall.net/resource/794193/prepositions-at-the-end-of-questions

https://wordwall.net/resource/939575/complete-the-questions-with-a-preposition

https://test-english.com/grammar-points/a2/subject-questions-questions-preposition/

https://www.liveworksheets.com/worksheets/en/English_as_a_Second_Language_(ESL)/Word_order/Prepositions_at_the_end_of_a_question_yl658321re

https://learnhip.com/exercises/questions-with-prepositions.php