Class 8 social science lesson number 12 question answer July 8, 2019 16 32 64 128 Class 8 social science lesson 12 question answer assamese medium Ajb class 8 social science lesson 12 question answer Lesson 8 homework 1.3 8 класс геометрия тик бурчтуу уч бурчтуктарды чыгаруу