Mandarin: Learn "你叫什么名字？" and "不客气"

What does "你叫什么名字？" mean in English?

• A.see you later
• B.fine
• C.what is your name?
• D.sir

Translate to Mandarin: "you're welcome"

• A.是
• B.不
• C.女士
• D.不客气