"......了吗？" is used in a question to "ask someone if he/she has completed doing something".  Full episode and transcript of this episode can be found @ https://www.patreon.com/posts/41310180 Welcome to our new patrons：Carson M, Jakub W, Nigel W, Dominion, Amanda, William, Shravan, Channing, Josh P, Sofia T. Please introduce yourself @https://www.patreon.com/posts/33867685 and take the survey https://www.patreon.com/posts/34606334 If you think our podcast is valuable to you and other Chinese learners,  become our patron for as low as $5/month. You will have access to all of the transcripts, vocabulary list and patrons only episodes. Are you already a listener? Leaving the show a review on iTunes will help more people find the podcast. Thank you!!