I have only been in America ____ two year.这道题答案为"for",这是为什么?

I have only been in America ____ two year.这道题答案为"for",这是为什么? I have never been to ____ America I have been (i ) in keeping fish for two years Lily has been in this city for only one year,but she ____ (m 这句话如何翻译：I have been in China for two years. I have been in china for two years.这句子哪儿错了 I have been abroad only ____(两次) I have been working for two days. I have been living in Shanghai for two years,but i have not I have ____ the bike for a year a become b.became c.been.d t I have been living in Beijing for almost a year and I'm stil He has ____ ____ America for 3 years.填 been to 还是 been in