Correct sentence: They got their house painted before the festival. 

বাকি বিকল্পগুলো ভুল কারণ:

“to paint” → ভুল, কারণ এটি বোঝাবে তারা নিজেরাই রঙ করবে।

“paint” → base verb ব্যবহার, সঠিক structure নয়।

“painting” → present participle, structure ভুল।

Causative Verb:

সার্থক ব্যবহার: যখন subject নিজে কাজ না করে অন্যকে করায়, তখন causative verb ব্যবহৃত হয়।

বহুল ব্যবহৃত causative verbs: Help, Get, Have, Let, Make।

1️.Get এর structure:

1. Subject + get (any tense) + object + verb-এর past participle

Example: John got his car washed.

2. Subject + get (any tense) + person + infinitive (to + V1)

Example: John got Alex to clean the bedroom.

2️.Have এর structure:

1. Subject + have (any tense) + person + base verb

Example:

John had Alex clean the bedroom.

He always has me do his work.

Mary will have Alex prepare her homework.

2. Subject + have (any tense) + thing + past participle

Example:

John had his car washed.

He always has his work done.

Mira will have her homework prepared.

3️.Make এর structure:

Subject + make (any tense) + person + base verb

Example:

Robert made me beat that little child.

He always makes me do his work.

Mary will make me prepare her homework.

I made him wash my car.

He makes me laugh whenever I am down.

• Correct sentence: I asked Javed if he had passed.

- Interrogative sentence এর direct narration কে indirect narration এ পরিবর্তন করার সময় reported speech এর পূর্বে if বা whether বসে।

ক) I asked Javed had he passed.
- বাক্যটি ভুল।
- Because it lacks the conjunction "if" or "whether" to introduce the reported question. In English, when forming reported questions, the word order changes, and the subject follows the verb, but in this case, "had he passed" is in the wrong order.

খ) I asked Javed if he had passed
- বাক্যটি সঠিক।
- The conjunction "if" introduces the reported question, and the word order follows the correct structure for reported speech: subject + auxiliary verb + subject + main verb.

গ) I asked Javed if you had passed
- বাক্যটি ভুল।
- কারণ এখানে "he" এর জায়গায় "you" এর ব্যবহার হয়েছে। 
- বাক্যের subject এর সাথে pronoun এর মিল থাকতে হবে যা হলো "Javed."

ঘ) I asked Javed that had he passed
- বাক্যটি ভুল।
- Because it uses "that" instead of "if" to introduce the reported question. In reported speech, we typically use "if" or "whether" to introduce a reported question, not "that."

• সঠিক বাক্যটি হচ্ছে - He was hanged for murder.

• Hang (verb) - ফাঁসি দেওয়া; ফাঁসি হওয়া; ফাঁসি নেওয়া।
- এই অর্থে এর past tense, past participle form hanged হবে। 
- যেমন:
- He was hanged for murder - খুনের দায়ে ফাঁসি হয়েছে;
- He hanged himself - ফাঁস নিয়ে মরেছে।

 • Hang (verb)- ঝোলা; ঝুলে থাকা; ঝুলানো; ঝুলিয়ে রাখা:
- এই অর্থে এর  past tense, past participle form হবে Hung.
- hang something from the ceiling; a picture hanging on the wall; windows hung with curtains.