甲基酮的结构式

Excause me,when__you__the man in bule? Lst year in Nanjing.And I ___ him for about one yearA did;know;have knownB have;known;have knownC did;know;knewD have;known;knew i will talk to you later hope The meeting has been put off by an hour.是被动语态? I don't think that the meeting has been put off,_________?A.do I B.dose it C.hasn't it D.has it C) 19.I heard the sports meeting has been put off until _______,hasn’t it( ) 19.I heard the sports meeting has been put off until _______,hasn’t it?A.the 3 and 4 B.the 3th and 4th C.the 3 rd and 4th D.four and five 1.the strike has been called off,there will be no train tomorrow.A.Until B.Unless C.After D.Before 选啥,为什么,翻译下划线是在最前面。我还想看看其他答案。 There is a n____ on the board saying that他和meeting has been put off. why do you often make mistakes?(改为同义词)（ ） do you often make mistakes ( I made mistakes pig的复数是什么 a head of cattle 可以这样说吗?cattle 不是复数吗那 一头牛是什么 subject是什么意思…谢谢 subject是什么意思啊 Peter is a student______ClassTwo.A.in B.of C.on D.from ther are play basketball every day中play用不用现在进行时?为什么?如题 auspicous year of the tiger中文意思是什么 Happy the year of rabbit 和Happy year of the rabbit 奶具对啊?谢谢! year of the horse happy new i'm happy ____(pass)the end- of -year exams everything,says,well,going,he,is,there (.)连词成句 熊猫长什么样?它的生活习性又是怎样? 老外说你长的象熊猫,是想表达什么意思?就是You like a panda! 填量词!一（）卫星 修饰卫星的量词是什么? academic a.啥意思 academic engagement是什么意思 'It's none of your business,' the young man said rudely.'This is a private conversation!'.是什么 'It's none of your business,'the young man said rudely.'This is a private .'想问个标点和大小写的问题.business后面为什么是逗号,在分号里面还能以逗号结尾?下面为什么接小写?然后到'This.'却大写? I can get there by train.改为一般疑问句 advice这个单词的复数形式是什么 They get there by train 改一般疑问句 There students can get $12 a day.改为一般疑问句