I have been studying _____ I can to learn Englishas hard as,so hard as,too hard as,too hard so so答案是哪个?

i have been studying history in china I have been studying history in china 如何翻译 i have been studying history in china 的语法要点 have been的时态.I've been (studying) English for 3years.为什么用studying而不是to study I have been studying English since I was five (对since I was five提问) i wonder why i can not get good grades a-___i have been studying so hard I have been studying English (since i was eibht years old) (对括号内容提问） where have you been studying?-I have been in a high school —— headmaster is a womenwhere have you been studying?-I have been in a high school — headmaster is a women用that还是whose I have been studying English _____ five years ago.应该填will还是since I have been studying English for ____ ____ ____(五年多)只有三个空 I ,for,have ,years,been,two ,studying ,over,Chinese 怎样连词成句. I have been studying English for four years.就for four years提问 I have been studying English for ten years.谓语和宾语分别是? How long have you been studying? Robert is said ______ abroad ,but I don’t know what country he studying in .A .to have studied B .to study C .to be studying D .to have been studying选择哪个啊?been 怎么使用? I've been studying English since 12. 英语语法题8(括号内是错的)I have been studying computer for several years and I still )参考答案am , I have been studying English since I was five (对化线部分提问)前面有2个空