how long has his grandma died错哪了,为什么?答案是把died 改成 been dead 为什么要这么改啊?

-How long has his father worked in that city?-he has worked there s___ last year. How long has Greg been working on his degree--- five years?请翻译 —_____ did your uncle leave his hometown?—He_____for nearly twenty years.A.When;has left B.When;has been away C.How long;has left D.How long;has been away选什么为什么 How long is it since he () his hometown?He () for nearly 10 years.A left;left Bhas left ;has leftChas left ;has been left Dleft ;has been left how long has the meeting()?AbegunBstartedCoverDlasted 英语选择How long has his uncle ___ his home?如题,A.left B.been away C.been away from D.leave __did your uncle leave his hometown?He ___ for twenty years.A when ,has been awayB how long ,has been away,选哪个,为什么, 是how long has she been learning…还是how long has been she learning… 为什么是How long has he been there 而不是How long has he gone there ---I don't know_____________?---In ten minutes.A how long has he been hereA how long has he been hereB.how long will the film last C.how often he goes to visit his parents D.how soon the film will begin —________did your uncle leave his hometown?—He________for nearly twenty years.A.When; has left—________did your uncle leave his hometown?—He________for nearly twenty years.A.When; has left B.When; has been awayC How long; has left D.How long; —________did your uncle leave his hometown?—He________for nearly twenty years.—________did your uncle leave his hometown?—He________for nearly twenty years.A.When; has left B.When; has been awayC How long; has left D.How long; has been away 【英语】How long has Mr Green _____ his country?Do you konw?选项：A,leftB,come toC,been away fromD,been from How long ()he() his home?For about two weeksA did leave B is leavingC has left D will be away from how long has his grandma died错哪了,为什么?答案是把died 改成 been dead 为什么要这么改啊? How long has she been dead?=How long _ _ _ she His legs are long用have/has改写下列句子 his english teacher has long hair变一般疑问句