grade nine student有这种说法吗

grade nine student有这种说法吗 How to be a Grade Nine student 请问 句子:I'm writing to every student who study in grade nine.有 I am a student of Grade Nine,I want a pen pal who can speak Millie is a good student.She is in the (nine)grade this term 一篇关于课外活动的英语作文,should student in Grade Nine do after-class ac as a student in grade nine ,we are too busy to a__ a holiday 英语翻译How times flies!Now I am a student in Grade Nine and fac I'm a student of Grade Nine.Now I'm very ___with my lesson这篇 关于grade 有 the third grade和grade three 两种说法是不是序数词+gradegrade+ A plan for Grade Nine 有Is she not my student?这样的说法吗?