Question

--David, look at the man in white over there．Can you tell me __________ ? --He is a doctor.

A.who is he
B.who he is
C.what does he do
D.what he does

Answer 1

【答案】：D

此题可以用排除法，宾语从句用陈述句语序，容易排除A、C两项。根据答语He is a doctor．可知应该是问职业，而who是用来询问身份的。因此选D。