问题补充:
I think he is Charles.
A. Who do you think he is
B. Do you think who he is
C. Whom do you think he is
D. Do you think who he is
答案:
(答案→)A. Who do you think he is
B. Do you think who he is
C. Whom do you think he is
D. Do you think who he is
解析:可联系答.案.网客服索取。