_（When,while）we need ten chairs,we have got only five.求助应该填哪个.答案是while.为什么?

_（When,while）we need ten chairs,we have got only five.求助应该填哪个.答案是while.为什么? what they need most （is）money while what we need most （are） textbooks when the teacher came in,we were reading.(用while改写句子） We need to d____ when we should go. 英语题where and when to go _(not decide)yet.maybe we need to have another discussin能用haven't decided吗 还有能说明原因吗 ①.while we （have）dinner,the telepho①.while we （have）dinner,the telephone rang. ②.what you （do） when your mother came cable? ③.we （read）books while he （watch We _（test）the new machine when the others _（worWe _（test）the new machine when the others _（work）in the fields.填_部分, we need you _(help) our studentscan you tell _(they) stories 一道英语状语从句练习题When shall we go planting trees on the hill?___it begins to rain,so they don`t need watering.A not until B while C till D unless 为什么选C不可以? 句型转换 .She taught herself English When she was a child (同义句）She _ English _ _ When she was a child.Finally we got to the World Rark .(同义句）_ _/ _ _ _,We_ _ the world rarkCan she give us a talk on how to make a home page next mon 同义句We need more exercise.we need ()()().we need ()()()（）. we need air to breathe.we need air to survive.And when we breathe it lt keeps us alive.快 we were having a party when the train started 用while 改为同义句while we ---- ---- a party ,the train ---- 我们需要从游泳中学会游泳 翻译 we need to learn to swim _ _ _ 英语单选求详解1.-------When shall we go planting trees in the hill?-------_______it begins to rain ,so they don't need watering .A.Not until B.While C.Till D.Unless我选了B2.We need to think outside of box __we are to come up with something When we are clebrating one's birthday ,we usually_ a birthday _ and _ a birthday _ together. maybe we need to take a brake for a while的中文意思是 when while as造一句!是不是while在不表对比时!就可以与when互换!如：The telephone rang while I was doing my homework.We must strike while the iron is hot.(这句可以换when吗?）还有用as表一边……一边……时造个句!