Choose the correct passive form of the sentence: "They must finish the homework."

→ Correct Answer: The homework must be finished by them.

Active: They must finish the homework.
Passive: The homework must be finished by them.

Active Voice থেকে Passive Voice-এ রূপান্তরের নিয়ম:
→ Object becomes Subject: Active Voice-এ যা Object ছিল, Passive Voice-এ সেটি Subject হয়ে যায়।
→ Be verb is added: Active Voice-এ যে verb থাকে, Passive Voice-এ তার সাথে 'be' verb যোগ করা হয়, যা verb এর tense অনুযায়ী হবে।
→ Past Participle of the verb: Active Voice-এ যে verb থাকে, Passive Voice-এ তার Past Participle form ব্যবহার করা হয়।
→ Subject becomes Object: Active Voice-এ যে Subject ছিল, Passive Voice-এ সেটি Object হয়ে যায়, এবং এর আগে "by" (বা অন্যান্য Preposition) যোগ হয়।

→ May, might, can, could, must, ought to, be going to যুক্ত Active Voice-কে Passive Voice-এ রূপান্তর করার সময়: এগুলোর পর 'be' বসে এবং তার পরেই verb এর Past Participle form বসে।

Example:
Active: He can solve the problem.
Passive: The problem can be solved by him.
Active: They will complete the assignment.
Passive: The assignment will be completed by them.
Active: I should write the report.
Passive: The report should be written by me.
Active: They have completed the task.
Passive: The task has been completed by them.