谢谢楼主 非常感谢

是第一课时的吗

Thank you very much

Thank you very much

谢谢，非常感谢啊！！！！！！！！！！！！！

thank you very much

thank you a lot.

借来看看，谢谢啦。。。

thank you very much.

正在上第六单元，谢谢~~~~