আমি তাকে দিয়ে চিঠিটা লিখালাম ।

আমি তাকে দিয়ে চিঠিটা লিখালাম ।

• ক. I wrote the letter by him .
• খ. I had written the letter by him .
• গ. I had the letter written by him .
• ঘ. I got the letter being written by him .