C. did quit D. have quit 免费查看参考答案及解析 题目: 80. I don’t suppose it’s right to support your kid when he / she ___ ___ ___(犯错误). 81. The astronaut ___ ___ ___(接受挑战) and cycled the 250-mile road alone. 82. 要求志愿者组织大型社会活动。有经验者优先。