• Complete Sentence: I know his name but I haven't managed to ferret out where he lives.

• Bangla Meaning: আমি তার নাম জানি, কিন্তু সে কোথায় থাকে তা এখনো খুঁজে বের করতে পারিনি।

• ferret out (phrasal verb with ferret verb)

• English Meaning: to discover or find out something after searching for it.

• Bangla Meaning: খুঁজে বের করা, অনুসন্ধান করে বের করা।

• "খুঁজে বের করা" বোঝাতে ferret-এর পরে preposition হিসেবে সাধারণত out বসে।

Example Sentences:

• The police are trying to ferret out the truth about the incident.

• Journalists worked hard to ferret out details of the scandal.

Source: 1) Cambridge Dictionary 2) Accessible Dictionary by Bangla Academy

Explanation:

• When forming the passive voice with modal verbs like can, may, should, would, must, the structure is:
  modal + be + past participle (V₃)

Examples:

• Active: I can do it. → Passive: It can be done by me.

• Active: They should complete the project. → Passive: The project should be completed by them.

• Active: He would sing good songs. → Passive: Good songs would be sung by him.

• Active: She may use the tubewell. → Passive: The tubewell may be used by her.

Why other options are wrong:

• খ) The project should completed by them.  be is missing; correct form is should be completed

• গ) Should the project be completed by them.  This is a question form, not a statement

• ঘ) The project completed should by them.  Word order is incorrect; passive rules not followed

Source: A Passage To The English Language, S.M. Zakir Hussain

Complete Sentence: When you see such kindness, you cannot but do something to repay it।

• Cannot help / Cannot but

  • এগুলো ব্যবহৃত হয় কোনো কিছু না করে থাকা সম্ভব নয় বোঝাতে

  • Cannot help-এর পরে gerund (verb+ing) বসে

  • Cannot but-এর পরে verb-এর base form বসে

• যেহেতু প্রদত্ত বাক্যে Cannot but ব্যবহার হয়েছে, তাই শূন্যস্থানে do বসানো হয়েছে

• More Examples:

  • I cannot but laugh.

  • I cannot help going there.