I have to look after my sisiter at home today. 再答: 望采纳,谢谢^ω^ 再问: 能在帮我道题吗 再问: 再问: 能帮我把单选确认一下吗 再问: 看看有没有错的 再答: 那一道题? 再问: 所有的 再答: 27A 28 C 29D 30 D 31 B 再问: 再问: 最后的一点回答必采纳 再答: 67. doesn't need to 68. in order to 69. Why are , developing 70. What did , ask