题目内容
21、The boys is impolite to others and this _________ hurts himself．
A．in turn B．at turns C．by turns D．in turns
试题答案
21、A
相关题目
题目内容
21、The boys is impolite to others and this _________ hurts himself．
A．in turn B．at turns C．by turns D．in turns
试题答案
21、A