45.How long have you been__(skate)?For five hours.46.The students are45.How long have you been(skate)?For five hours.46.The students are cleaning the streets_(raise)money for charity.47.I'd like tocollect stamps because they are _

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45.How long have you been______(skate)?For five hours.46.The students are45.How long have you been______(skate)?For five hours.46.The students are cleaning the streets_______(raise)money for charity.47.I'd like tocollect stamps because they are _____
45.How long have you been______(skate)?For five hours.46.The students are
45.How long have you been______(skate)?For five hours.
46.The students are cleaning the streets_______(raise)money for charity.
47.I'd like tocollect stamps because they are _______(interest).
48.They have_______(run)out of all the food.
49Do you often have your hair _______(cut)in that barber shop?.
50.On her _______(nine)birthday.Jenny got a big surprise.
51.What topic are the young ladies________(interest)in?
52.In his composition________(common)word is but.

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为你解答。
45.How long have you been (skating)? For five hours.
46.The students are cleaning the streets (raising) money for charity.
47.I'd like tocollect stamps because they are (interesting).
48.They have (run) out of all the food.
49Do you often have your hair (cut) in that barber shop?.
50.On her (ninth) birthday.Jenny got a big surprise.
51.What topic are the young ladies (interested) in?
52.In his composition (the commonest) word is but.

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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 collecting shells?翻译英语：how long have you been collecting shells?主要语法翻译 How long have you been like this? HOW long have you been studying english 怎么回答