The required answer is - খ) There is nobody who has some needs.

ব্যাখ্যা:

• বাক্যের অর্থ: “কেউ নেই যার কিছু চাহিদা আছে,” যা অর্থবহ নয়, কারণ প্রত্যেকেরই কিছু না কিছু চাহিদা থাকে।

Affirmative থেকে Negative করার নিয়ম:

• Affirmative: Everybody has some needs.

• Negative: There is nobody who has no needs.
  অথবা: There is nobody who does not have any needs.
  অথবা: There is nobody but has some needs.

আরও উদাহরণ:

• Aff.: A mother loves her child.
  Neg.: There is no mother who does not love her child.
  অথবা: There is no mother but loves her child.

• Aff.: Everybody likes flowers.
  Neg.: There is nobody who does not like flowers.
  অথবা: There is nobody but likes flowers.

নোট: ক এবং গ অপশনগুলো সঠিক।

Source: A Passage to the English Language, S.M. Zakir Hussain.

The correct sentence: ক) What he thinks is known to me.

• Know এর passive রূপ হলো is known।

• Noun clause What he thinks বাক্যের subject হিসেবে আছে।

• এটি Present Tense-এ বাক্যের অর্থ ঠিক রাখে এবং passive voice-এর নিয়ম অনুসারে গঠিত।

Passive Voice of Complex Sentence:

• Complex sentence-এ একটি clause subject বা object হিসেবে ব্যবহার হতে পারে।

• Active voice-এর object যদি clause হয়, passive voice-এ তা subject হিসেবে আসে।

• Active voice-এর subject যদি clause হয়, passive voice-এ তা object হিসেবে আসে।

• Clause-এর মধ্যকার verb পরিবর্তিত হয় না।

Examples:

• Act: I know what he thinks. → Pass: What he thinks is known to me.

• Act: He showed me what he had made. → Pass: What he had made was shown me by him.

• Act: She said what she knew. → Pass: What she knew was said by her.

• Act: We will explain why we want to do it. → Pass: Why we want to do it will be explained by us.

• Act: What he has done will save his family. → Pass: His family will be saved by what he has done.

Other options:

• খ) What he thinks was known by me. → Past Simple Passive; মূল বাক্যের Present Tense-এর সঙ্গে মিল নেই।

• গ) What he thinks is being known to me. → Present Continuous Passive; know সাধারণত continuous কাজ বোঝায় না।

• ঘ) What he thinks has been known by me. → Present Perfect Passive; অর্থ “আমি ইতিমধ্যেই জানি”, মূল Present Tense-এর সঙ্গে মিল নেই।

Source: A Passage to the English Language, S.M. Zakir Hussain.

The correct answer is - ক) Do I know anything about his plan?

Assertive থেকে Interrogative করার নিয়ম:

• Assertive বাক্যে nothing থাকলে interrogative বাক্যে anything ব্যবহার করা হয়।

উদাহরণ:

• Ass.: There is nothing on the table. (টেবিলের উপর কিছু নেই।)
  Int.: Is there anything on the table? (টেবিলের উপর কি কিছু আছে?)

• Ass.: I know nothing about it. (আমি এ ব্যাপারে কিছু জানি না)
  Int.: Do I know anything about it? (আমি কি এ ব্যাপারে কিছু জানি?)

• Ass.: He said nothing. (সে কিছু বলল না)
  Int.: Did he say anything? (সে কি কিছু বলেছিল?)

• Ass.: There is nothing better than honesty.
  Int.: Is there anything better than honesty?

Other options:
খ) Did I know anything about his plan?

• Tense বদলে গেছে (past tense), মূল বাক্য present tense-এ ছিল।

গ) Have I known anything about his plan?

• Present perfect tense ব্যবহার করা হয়েছে, মূল বাক্যের সঙ্গে সামঞ্জস্য নেই।

ঘ) Do I know nothing about his plan?

• Double negative হয়েছে, যা সাধারণত grammatical বা awkward শোনায়।

Source: A Passage to the English Language, S.M. Zakir Hussain.