问题描述：
that stuff's old hat
Aw,that stuff's old hat :study at the same time every day,be sure your clothes are comfortable,make sure you have enough light,blah-blah-blah
Aw,that stuff's old hat :study at the same time every day,be sure your clothes are comfortable,make sure you have enough light,blah-blah-blah
问题解答：
我来补答展开全文阅读