there is no reason the students shouldn't work hard

there is no reason the students shouldn't work hard the reason is that students don't work hard than the student there is no reason. there is no reason why The students work very hard. No matter there is no reason.(急) 是there is no students in the class.,还是there are no students There is no reason to be. there is no reason to be there is no reason why怎么造句 The students shouldn't listen to music too much.It is a wast the boy is clever ,but he doesn't work hard