题干
－Who is that young man ____?
－He's Jack, my brother.
A：in blue
B：on blue
C：in the blue
D：on the blue
答案(点此获取答案解析）
A
－Who is that young man ____?
－He's Jack, my brother.
A：in blue
B：on blue
C：in the blue
D：on the blue
