“You have all done very badly” remarked the teacher. – বাক্যটির indirect speech হবে-
The teacher remarked that they had all done it very badly.
Correct
The teacher told that they did it very badly.
The teacher said that they have done worsted.
The teacher remarked that they do it bad.
Explanation:
Correct Answer is: The teacher remarked that they had all done it very badly.
Direct speech কে Indirect speech করতে হলে Reporting speech এর Subject হিসাবে they বসবে you এর পরিবর্তে এবং Present perfect tense পরিবর্তন হয়ে Past perfect tense হবে।