He __upstairs because I saw him playing football on the playground just nowA mustn't be B can't be 这里为什么不选A 这2各有什么区别

the old man works hard becaus he is in poor health改错 He __upstairs because I saw him playing football on the playground just nowA mustn't be B can't be 这里为什么不选A 这2各有什么区别 The Greens __upstairs A:live B:lives C:are lives D:living correct the following sentences1.Because he felt ill,so he did not come to the meeting2.He is tall,but he is very weak in healthy3.He is not so strong like you 4.I began to learn English until I went to middle school5.He rushed over to see him becaus 英语的缺词.简单的.Eddie is h____ a microphone.Hobo is very s____ at this. He wants to know w____ Eddie tells Hobo that he wants to be a h____.Hobo says he should p____a lot.Eddie is s____ he can be a good host.But Hobo doesn't b____ it becaus 英语翻译短文：Tony is on the swim team.He is a good swimmer .He swims all year.He is at the pool at six o’ clock every morning and swims for ninety minutes.He said,“Before you swim,you must prepare your body for swimming.You stretch becaus 英语翻译Nsreddin was cutting a branch off a tree in his garden.While he was sawing,another man passed in the street.He stopped and said ,Excuse me,but if you continue to saw that branch like that,you will fall down with it . He said this becaus 英语翻译An eleven-year-old boy in a small town wanted to be a train driver.But the boy was born without hands.His father taught him to use his feet as hands.He couldn,t go to school,so he spent all his time watching trains coming and going becaus 完成下列反意疑问句Someone went there,()()?1.They knew everything only after you told themthey knew()()you told them2.Because of SARS,he didn't take a trip to Guangzhou.Hestayed at home.He stayed at home ()(()taking a trip to Guangzhou becaus Becaus I am devil .So my hert is dead. We have to go back becaus it starts to rain. I dont like her becaus she is p-----填什么? Martin Luther King Jr.was born in Georgia in 1929.When he was 1 a boy Martin learned that black Americans,were often treated differently from most of 2 fellow Americans.Many could not attend good schools,obtain good jobs,or live in nice houses becaus 一道完形填空.紧急!Paper was first invented by a Chinese man called Cai Lun in AD 105. He made is __1__ the wood of a kind of tree. Today,paper still __2__ from trees.We can use __7__ paper every day.We must begin using __4__ paper now becaus 用所给词的适当形式填空 All the children looked (happy)at the fashion show.Lots of animals losttheir?(live)area becaus of the serious population.People think he is one of thr greatest?(invent)in the world.(siow),everything became a little b Why do Tom and Jim feel excited?Today is a nice day.Tom is going to school with his friend Jim.They are very excited because they're going to have a football match this afternoon.On their way to school,they meet Tim.Tim feeis sick.He looks sad becaus I’ll let you know ____ he comes back.A.before B.becaus C.as soon as D.although1我知道答案是C.我想知道为什么不能用A.2如果我要表示我会在他回来之前让你知道,而不是他一回来我就让你知道,又该用什么来表 we'd better drive_ (careful).The store is _(close)at9:30.which do you like _(well),swimming of playwhich do you like _(well),swimming of playing football?_he havea temperature,dovtor?no ,he_.he can gey up about 2 hours day.we have to wait here becaus