题干
-- Look at the man in blue! Do you know ?
-- Oh, he is a policeman.
A：what does he do
B：what he does
C：how he does
答案(点此获取答案解析）
B
-- Look at the man in blue! Do you know ?
-- Oh, he is a policeman.
A：what does he do
B：what he does
C：how he does
