The students should have done the assignment.Hướng dẫn dịch14/16The students should have done the assignment.The assignment should be done by the students.The assignment should had been done by the students.The assignment should have been did by the students.The assignment should have been done by the studentsGiải thíchĐáp án đúng: D Dịch: Bài tập đáng nhẽ ra cần làm bởi học sinh.