Great changes( )place in China in the past 20 years.A.have taken B.have been taken C.took D.would take 请问选哪个?为什么?怎么判断,请逐个分析．谢谢～

great changes Great changes great changes in China GREAT CHANGES HEVETAKENPIACENICHAINITHELASTFEWYEAR翻译 there()great changes in Jiangsu great cutural changes什么意思 英语作文：Great Changes in My Hometown Great changes have taken place since liberation Great changes have taken place there. Great changes in my homtown 英语作文、 英语翻译Great changes —---- ------ young people------ ----- Great changes has been 的同义词 Great changes have taken place in my hometown since 1930.请问句子中的Great changes是什么意思? great changes take place since liberation 和 Great changes have taken place since liberation的区别 There have been great changes in computers(同义句）Great changes have __ __in computers There have been great changes in Sunshine Town. 同义：Great changes have___ ___in Sunshine Town. great changes in our life 英语作文100字 Great changes have taken place in Shanghai's transportation.翻译?