Teachers's Day is on Dec.10th.一句中on要不要加?为什么有的句子中没有加ON,有的加了,到底要不要ON呢,为什么?

teachers'day is on the t( ) of s( ) Teachers Day is on the t of S Teachers‘s Day is （on September 10th）.对括号部分提问 （ ）（ ）（ ）Teachers’Day? Teachers ’Day is the t( ) of S( ). World teachers' Day is on( ) Teachers' Day is aday to show( )to teachers.第一个括号那停了。World teachers' Day is on( ). Today is a s___ day for the teachers.It's Teachers' Day. Teachers'Day is on september 10th.改错 When is Teachers'Day?It's September the tenth. Children's Day is on( ) ‘在教师节”怎么用英语表达on Teachers’ Day还是on Teacher’s Dayon Teachers’ Day还是on Teacher’s Day ----day is on june first and ---- day is on september tenth.a.children's,teacher's b.children's,teachers'c.children's,teacher' d.children' ,teachrs' 那个好像没大写. on teachers` day ,on the teachers day有什么区别 teachers is day is in( ) 连连看 1 the new year's day is on december 25th 2 children'sday is on september 10th3 women's day is on january 1 st4 christmas day is on march 8th5 teachers' day is on june 1 st环保问题日益严峻的摆到我们面前,“禁止焚烧禾吉 Teachers`Day is on________.New Year`s Day is on______.National Day is on______.Women`s Day is on________.ChristmasDay is on______Chinese Planting Day is on___. Teachers‘s Day is （on September 10th）.对括号部分提问 （ ）（ ）Teachers’Day?就两个括号,不要写出两个单词以上的答案.写好了, students (s...)cards or flowers to their teachers on Teachers'Day 括号内填什么,s开头的 The New Year`s Day is on Children`s Day is on Women`s Day is on 还有Christmas Day is on 和Teacheas Day is on