三年级估算题大全800题

keep doing和keep adj有区别吗EG：All the students should keep the room clean.我知道clean有形容词形式.那么怎么判断是clean还是cleaning呢?什么时候用形容词,什么时候用doing? 英语补全对话,B:Hello ,this is Bill.S;Hello,this is Sally.The summer vacation is coming._______________?B:I haven't decided yet .How about you?S:I am going to London.I have dreamed of visiting that place for a long time.B:__________________?S:Be keep sth adv 与 keep sth adj 的区别keep sth adv 与 keep sth adj 的区别keep the lights off keep the window open 为什么我看不到回答啊？？？ 麻烦回答到这儿 http://zhidao.baidu.com/question/487003096.html?quesup2 盥读啥音?谢谢了,大神帮忙啊 余弦定理中弦读什么音谢谢了, special occasion weddings什么意思 根据语境补一句话,下雨天,一个妇女带着他的宠物上了公共汽车.那只小狗又湿又脏妇女对售票员说：“我愿意给狗付钱,希望你允许他象其他乘客一样有一个座位.”售票员回答：“可以不过__ active的反义词 active反义词 a man eats an apple eat为什么要加s 有趣的实验有哪些? 英译汉 four-fold reduction in weight. 有什么有趣的实验材料要常见的 The pressure _______ causes Americans to be energetic,but it also puts them under a constant emotional strain.a、to compete b、 competing c、 to be competed d、 haveing competedthe pressure to do something为什么选A 英语翻译轴的扭矩图 How do you understand Better safe than sorry?用英语回答! 魏晨的歌“疯人愿”用英语怎么说? 有趣的小实验实验材料最好是家里有的,要有原理！ 大小型猫科动物有肉垫那么比如猫这种小型猫科动物,多高的地方摔下来不会摔死呢?真的很高的地方掉下来也会摔死吗? have/has been能做系动词吗?最好有例句说明我问的是have/has been能不能做系动词？ 把下面的中文翻译成英文：我原先没想到她变化那么大 找错The way which the different kinds of rock lie on one another找错The way which the different kinds of rock lie on one another helps to tell the story of long ago.“of long ago”错了,错哪里了?如何 我怎么觉得是 which 改成“in 英语和美语可以交流吗不会象北京话 和广州话 那么差别严重吧 学英好 还是学美好 麻烦看下一个生物题有人了解的告诉下哟,真心感谢大伙了4L 有趣的实验有哪些 英语翻译 求助一下大家高中生物题,求解~~~~有点急,真心感谢大家了0c 请问大家下化学题目 帮我一下 谢谢就告诉我吧真心感谢大伙了7f 求助一下大家高中生物题,求解~~~~有点着急了啊,真心感谢大家了9Y I couldn’t understand why he pretended ____ in the bookstore.A.to see me not B.not to see me C. I couldn't understand why when i wanted some tea,there was ______ left in the teapot.A.none B.any C.nothing D.no为什么A,而不选呢? I couldn't understand why you refused …… 啥意思知道的给说下~