ব্যাংক মডেল টেস্ট [সাপ্তাহিক]১টি পরীক্ষায় এসেছেপ্রশ্ন ৩২Change the voice: "The teacher explains the lesson." কThe lesson is explained by the teacher. খThe lesson was explained by the teacher. গThe lesson is being explained by the teacher. ঘThe lesson has been explained by the teacher. উত্তর দেখুন