来自石爱国的问题
HeisWangMing'sbrother.(改为复数)Theseareherpencilcases.(改为单数句)
HeisWangMing'sbrother.(改为复数)Theseareherpencilcases.(改为单数句)


HeisWangMing'sbrother.(改为复数)Theseareherpencilcases.(改为单数句)
HeisWangMing'sbrother.(改为复数)Theseareherpencilcases.(改为单数句)
TheyareWangMing'sbrothers.
Thisisherpencilcase.
小朋友要加油了啊.