钢球的密度

We must not across the road.这句话哪里错了?快 英语的两个语法辨别问题我知道过去分词形式可以做定语,动名词形式也可以,但不知道二者怎么区别,都应该在什么时候用?masses of , the number of, many of,a large number of 有什么区别?这四个短语的后 these books each 用什么样的动词形式 These books will be______ helpful to those who wish to improve their English.A specilly B praticularly Word comes____free books will be given to ____come first in this book fair. 为什么填that, those who ? word comes是什么意思?为什么可以这样用? word comes ——free books will be given to ——come first this book fair.A that ,anyone who Bthat ,those who为什么选B these books will be______(give)away to the poor children in the mountain villagepeople don't need_________(spend) too much money. It is very awful to walk in wet and dirty streets.(对划线部分提问,划very awful) it is(very awful) to walk in wet and dirty streets划线提问 Forever Love Have Been Lasting~有语法错误吗 英语回答What are the advantages and disadvantages of these two types of family?a nuclear family or an extended family 指的是教育方面Some of these activities are perhaps more challenging than the assembly lines of the past,but the ultimate purpose is equally uninteresting. 新西兰health king,health life ,good health和最派克哪钟比较好?能推荐一些其他牌子吗? only through these comprehensive activities dose the body of a child get adequate movement.谓语在哪?does能省略吗?求相关知识,言简意赅 求好听的空间日志分类名～有特点日记分类名（我写日记用.等我找日记时候方便）我给20分哦 排序 England people left in the on do walk 每天坚持写日记的女生是个怎样的人说说有怎样的性格,偏好,内心想法,为什么呢 求生日快乐藏头诗一首!祝我亲爱的老婆生日快乐, 这几个字... Each year some of his money is given to the best scientists and writers of the world.的意思? She plays1.__ 2.__ 3.__ at least an hour every day.1.the 2.piano 3. I got up half an hour ago.(保持句意不变）I ____ ____ up for half an hour . She typed it an hour ago.改为现在完成时高悬赏！ After watching______TV,she played_____violin for an hour.A)/.../ B)the...the C)the.../ D)/...the为什么? “She has come here an hour ago”这句话对吗? 有没有人会写日记呀? do many people do on april fool's day 怎样与老师交往? 以秋为题的诗句 急求~~~~~帮帮忙,最少八句. look!there is a girl .on the playground A runs B running C to run D is running选什么 为嘛选这个 The boys and girls are _______ the running race in the playground. A. looking B. watching C. seeing填什么 她多聪明!翻译成（）（）she is! 初中和高中的哪些基本英语常识对高中的英语有帮助哪些具体的东西，我看了既可以用的