Alan is my brother.对my brother部分提问

Alan is my brother.对my brother部分提问 This man is (my brother).对my brother部分提问 that young man is my old brother对(my old brother画线部分提问) My big brother is (a doctor).对括号部分提问. my brother is tall and thin.对划线部分提问 my brother is polite and helpful(对画线部分提问 My brother is six years old.对划线部分提问 My brother is 12.（对划线部分提问） My brother is a student对划线部分进行提问 对划线部分提问My brother is tall and fat. He is my brother.对my brother提问 The boy is my brother 对my brother提问