学习了，谢谢，上课正好可以用

thank u very much

thank you very much

个人认为unit7比较好上一些

很好，正好我儿子刚教了这一课

thank you  very much

回复 1# sabrina8711

好是好，就是太贵了。不过谢谢了

还以为A部分,不过做的很好

thank you very much