急,一道英语小题Mary is going to China ____vacation.这个横线上为什么不能填on?on vacationt 和 for vacation的区别是什么?请朋友们做详细的解答,我的分不多．

急,一道英语小题Mary is going to China ____vacation.这个横线上为什么不能填on?on vacationt 和 for vacation的区别是什么?请朋友们做详细的解答,我的分不多． 初三一道英语题Miss Green is a friend of（ ）A.mary's mother's B.mary's mother C.mary mother's D.mother's of mary请详细讲解,谢谢. 一道英语完型填空题~急Mary is 31 American girl.32 is from New York.She is thirteen.She 33 having mild cheese a lot.Now Mary is 34 China.She likes Chinese 35.She studies every day.She studies 36.She reads Chinese every morning.She likes speak 一道英语改错题 There is no such a student who is called Mary and whose mother is a doctor.求改错：There is no such a student who is called Mary and whose mother is a doctor. goin 一道英语小题,____ mothers can’t go to school today because they want to go to workA.Mary and Lucy’s B.Mary’s and Lucy’s C.Mary and Lucy 一道英语小题 完成句子mary is Bob’_______急 英语划线提问：This is mary speaking是Mary划线 英语划线部分提问 Mary is his sister提问Mary 英语初一题：Mary is in the dancing team.(同义句)Mary is in the dancing team.(同义句)Mary is____ _____ _____the dancing team. 谢谢 一道小题 急 请帮忙 一道英语选择题,---Who_______ the piano?---Mary,when she ____ time.A.plays,has B.is playing,has 英语一道连词组句题【急】out,days,school,in,is,two （.）___________________________________ 急求!初二一道英语填空题~There is a ten-minute b____between every two classes 问一道英语题!初二上册!一道,要解释啊!解释!解释!Please give me a ___ reply.Mary is a ____ reader.用所给词正确形式填空：fast,quick 翻译英语：Zhang Lan isgoing to Hainan.It is hot and sunny .She is going shop--ping.What is she goin 英语一小题填空 Mary:Hello.__1___?Mary speaking here.Lucy:Hello,Mary.This is Lucy.Mary:Lucy,