A:What about
B:Why not
C:How can you
D:Why not you
小萌同学骑自行车上学途中,以自行车为参照物,小萌是 ____.若小萌以5m/s的速度从家里骑车10min到达学校,小萌家距学校 ____m.
There are many volunteers ____ are helping the poor children in this area.