—Do you know _____?
—I'm not sure. Maybe he is a businessman. [ ]
A. who he is
B. who is he
C. what he does
D. what does he do
答案:C
—Do you know _____?
—I'm not sure. Maybe he is a businessman. [ ]
A. who he is
B. who is he
C. what he does
D. what does he do
答案:C