will win in the race?
A. Do you suppose who
B. Whom you suppose
C. Do you suppose whom
D. Who do you suppose
网友回答
A. Do you suppose who
B. Whom you suppose
C. Do you suppose whom
(答案→)D. Who do you suppose
解析：do you suppose为插入语要放在疑问伺后，又因为对主语人提问要用Who，答案为D。