We have been in China for three years ago .改错

We have been in China for three years ago .改错 They have been in this city ＿ three years ago.(A.for B.about The Greens have been in China for three years.(改为同一句） The Green have been in China for three years.改为同义句2种改法 The Whites _(has/have)been in china for three years?应该选哪个答案, i have been living in shanghai for three years Mary has been in China since three years ago.等于什么 He has been away from China( )three years ago 1.We began to learn English three years ago.2.I have been to I have been teaching in this school since three years ago.变同 首字母填空We have been in Australia for three days We have been in China for more than 10 years.（对划线部分提问） 划线部分为