A:that
B:which
C:whe
D:where
体育课后腿部和手部肌肉酸痛是因为肌肉中积累了( )
____味相投 无____无靠 游手好____ 鱼____而入
惊____之鸟 虚____一场 浩____荡 若无____事
—He's my classmate.