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免费课程
1、three classes───三节课
2、skip classes───n.逃课
3、caries classes───龋齿类
4、my classes───我的班级
5、classes there───在那里上课
6、classes───n.级别，阶级（class复数形式）
7、yoga classes───瑜伽课
8、conversation classes───会话类
9、claudication classes───跛行班
1、Assistantships are jobs pays paid with money or free classes.───助教以金钱或免费听课的形式获得报酬。
2、Other questions? Get free advice? Registered our free classes, when facing teachers!───还有其它疑问？想得到免费建议？注册我们的免费试听课程，当面向老师求教吧！
3、Assistantships are jobs paid with money or free classes.───助理职位是付给薪水或免费上课的的工作。
4、Assistantships are judged jobs paid with money or free classes, graduated assistance .───助理奖学金是那些提供奖学金或者免费课程的职位。
5、Surrounding the two free classes there will be time to understand the LBE approach and to meet our charming staff.───两个免费课程之外，将有时间给您进一步了解LBE学习方法。
6、In Boston, which has one of America's most improved public-school systems, schedules are arranged so that those who teach the same subject have free classes together for common planning.───波士顿拥有美国最好的公立学校XiTong，他们安排课程表会考虑到可以让教授同一门课程的老师们有时间一起进行日常备课。
7、Assistantships are just hayed for jobs paid with money or free classes.───助教奖学金是以发钱或者免费上课来换取劳动力。
8、Staff members hold on-site scientific lectures about marine life and offer free classes about marine animals and conservation to schools and communities.───人员举行关于海洋生物的现场讲座，向学校和社区提供有关海洋动物和保护的免费课程。
9、join our free classes at Denver Language Friends today!───丹佛语言朋友”参加我们的免费的课吧！