You must study hard in future,or you will fail in the exams.
You must study hard in future, or you won't pass the exams.
You must work hard from now on, otherwise you will fail in the exams.
You must study hard in future,or you will fail in the exams.
You must study hard in future, or you won't pass the exams.
You must work hard from now on, otherwise you will fail in the exams.