请选择ABCD3X1A'f+B6z6J0C,d5m6d:?,{ -Who is the young man？9x4L+u*[9y(\+Z9B
-He' s__________．9x4L+u*[9y(\+Z9B
A．twenty9x4L+u*[9y(\+Z9B
B．a teacher9x4L+u*[9y(\+Z9B
C．my brother9x4L+u*[9y(\+Z9B
D．in the room9x4L+u*[9y(\+Z9B