I have difficulty distinguishing between pronouns when it's a "type what you hear" sentence. All I heard was "Ĉui" with the consonant not recognizable at all. And because verbs aren't conjugated as in English, context doesn't help. :/
He is speaking much to fast, but I got the text as well. My problem is that it suggests that "Ĉu mi" is translated as "Shall I" which is an entirely different meaning (and graded incorrect) from "Am I" or "Do I" which was my first instinct.