"Feasgar math a thidseir."
Translation:Good afternoon, teacher.
It happens, sometimes, when you write something that makes sense but it is not what you were supposed to write. Try and listen a few more times, and try to figure out alternative words to the strange sounds you are hearing, considering word order and the unit focus topic. Repeat. If you are still stuck, just write any string of characters that can get you out of there and read the solution, as you may have done...