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请问新概念英语第一册1-20课的测试题 it __ ten years since he __hereA.is;left B.has been;had left为什么是A啊,有since不是应用完成时吗? 20.21. 19,20,21, 我做的这两题可对?19.20 话说这19和20题要怎么做 英语16题 In the past,man didn’t have to think about the protection of his environment.There were few people on the earth,and natural resources seemed to be___1___.Today things are ___2___.The world has become too___3___.We are using up our natural resources 英语 16题 英语试题161.we're so busy that mo one in the office can_____for any other workA spare B be spared C share D be shared2.he regards that book_______one of the worst that he's _______readA to be ,ever B to be ,never C as ever 要理由(1)you don't need to describe her,i______her several times.A.had met B.have met C.met D.meet(2)I don't think him saw me .he ______into space.A.just stared B.was just staring C.has just stare D.had just stared(3)your name again?I _____quite c 英语十三怎么写? 19用英语怎么写 英语中1-19怎么写 十九的英文怎么写 钢铁是怎样炼成的第10,11,12,13,14,15,16,17,18章的内容多写一点主要内容 主要 求12,13,15,16,17,18题的答案 11.12.13.14.15.16.17.18题, 17、18题解释…谢谢 17 18题 ,求讲解 1/2+3/4+5/6+7/8+9/10+11/12+13/14+15/16+17/18+19/20 值 求讲解1/2+3/4+5/6+7/8+9/10+11/12+13/14+15/16+17/18+19/20值求讲解 “十八岁的天空是黑暗的”英语怎么说 十八岁的天空有第二部吗? 18岁的天空18岁的生日来临之际,写篇人生感悟的文章送给自己.写点哲理性的。低调的 十八岁的天空应该是什么颜色喜欢看着天空 ,喜欢想着自己的未来,却不知道它到底是什么样的星海呵呵,自己不小,却不像个大人,单纯幼稚的心里总是很奇怪的想法但那却好像只是梦. 十八岁的天空怎么写 十八岁的天空是什么颜色,为什么 明天晚上七点吃饭好吗英语翻译. 求12到17题英语单选正确答案 高中英语单选17Having realized that I____use a kite to attract lightning,I decided to do an experiment.a.daredb.shouldc.wouldd.could 8-13英语单选 英语单选13～