Why did people start killing animals 同义句( )did people start killing animals ( 括号里填什么

Why did people start killing animals 同义句( )did people start killing animals ( 括号里填什么 When did Chinese people start to celebrate Chinese New Year? How?Why? Why did the people Why did people build this? Why did people choose the name Greenland did,build,people,why,this 连词成句 是不是 ：Why did people build this? why did people burn their nameson their farm animals why did people burn their names their farm animals When did it start? Why did you decide it so fast? why people like to think more ? when did it start? 解释 When did you start out? when did you start to______? 英语翻译why did the writer complain to the people behind him? why did the writer complain to the people behind him谁知道全文,求全文翻译 Why did the Native Amerians fight white people?I need the answer! why did Nelson Mandela turn to violence to make black and white people equal? why did people long ago often eat more food than they needed?why did people long ago often eat more food than they needed -- that is, they did they sometimes overea?