nancy has been in china since last year错在哪儿

My brother has been in Africa since last year. he has been in english since last he has been a soldier since last year同义句 Mrs.Brown ___(teach) English in China since last year. I have been in CZ since last year.这话对么?been in后可加since吗 英语翻译Internet in China has been developing rapidly since the he has been in english since last 什么意思 but have been in China for the last school year. 来个英语语法高手~It has been _____a year since we last heard from hi Tom got sick last May and has been in bed since then.为什么has there has been too much rain in china this year.为什么要用been? ——（）have you been in China?——Since last Wednesday