学帮网Mark is ten years old.He's on the four grade.这个Mark is ten years old.He's on the four grade.这个句子哪两处是错的?
来源：学生作业学帮网 编辑：学帮网 时间：2024/06/25 19:37:55
Mark is ten years old.He's on the four grade.这个
Mark is ten years old.He's on the four grade.
这个句子哪两处是错的?
year grades