Mary and Sally are .(sister) 应该填sisters还是填sister.哪位朋友知道?帮帮忙
问题描述:
Mary and Sally are .(sister) 应该填sisters还是填sister.哪位朋友知道?帮帮忙
答
Mary and Sally are .(sister) 应该填sisters还是填sister.哪位朋友知道?帮帮忙