. Use the appropriate modal to fill in the blanks. (Meaning of the modals is given in the bracket) (a) Teacher to student : You study at least three hours a day.(Speaker’s authority) (b) Student to his classmate: I study at least three hours a day (external authority) (c) His classmate: You study for more than three hours. (Moral obligation) (d) Classmate to his mother : I work hard in future. (promise)
(a) Teacher to student : You must study at least three hours a day.(Speaker’s authority) (b) Student to his classmate: I have to study at least three hours a day (external authority) (c) His classmate: You should study for more than three hours. (Moral obligation) (d) Classmate to his mother : I shall work hard in future. (promise)