Do you know who that American is

Do you know who that American is do you know who that is? who _____ (发现)American,do you know? who is that man over there do you know name Do you know A who is that man B who is the winner C who will Do you know( ) A.Who that is B.who is that C.is that who 应该选 Do you know ___Awho is that woman B who that woman is Cwhom do you know who is my teacher? do you know who this___(sing)is "Do you know who is she? Do you know who is he? 1,Do you know who is the girl ___ a blue dress?A.that is dre