1.Mario used to be (short)就括号内部分提问 2.You didn't use to have straight hair(改为反意疑问句) 3.The old woman has a few friends(改为反意疑问句) 4.She used to be afraid of being alone(用always改写原句)
What did Mario used to be? You didn't used to have straight hair,did you? The old woman has a few friends,doesn't she? In the past she was always afraid of being alone./ She was always afraid of being alone before.