— How long have you ________?— For three days.A.got a headache B.fallen ill C.caught a cold 为什么是D

How long have you been how long have you been learning english? How long have you been studying? How long have you been in China? how long have you been dancing today? how long have you studied in this How long have you been there? How long have you live in China How long have you ----(live)here? “How long have you been watching how long have you done与how long have you been的区别 How long have you been skating?与How long did you skate?的区别 How Long have you felt thisHow Long have you felt this way?翻译成汉语 How long have you been here?为什么是How long have you been here,不是How long have you been standing here? how　long　have you been in China?——Since last Wednesday 啥意思 How long have you been like this?——Every day since （ ）mouth. how long have you been —— this school?为什么不用On 用in? How long have you been in America?——I was five横线中应填什么