蒙古属于中国吗

did you和 have you的区别是什么?如果想问,你到家了吗?是应该说did you arrive your home还是have you arrived your home I informed my boss of my arrival in Tokyo.为什么用informed.而不用完成时 英语选择题----What's the________of this new word?A.means B.mean C.meaning2.I made it clear that this matter_______with me.A.have to do B.had nothing to do C.has to be3.He likes writing so he__________ writing after graduation A.took off B.took o It is indeed beautiful weather There are short pants 改成同意句 It is a place.We can eat and drink in it.We can book a room and live in it for one day or severaldays.Tourists often go there.It is a\an_______.He feeds his animals w_____ the grass. 句子为什么不能做主语?英语中 ..You can't beat the convenience. You can beat a horse race ,but you can not beat the races.请高人帮我翻译下啊 《爱乌及乌》是什么意思? 爱乌几乌 爱乌及乌是什么意思?歇斯底里? 爱乌及乌跟一夜青 英文怎么打 谁知道呀你的一生我只借一晚 爱乌及屋什么意思 choice的同义词(a开头的） 啊~~英语介词真的好难背啊 一会儿to 一会儿with 一会儿about 有没有人能教教我方便记忆的方法啊~~不然我只有死记了 哪会屎的.不要复制一大段给我 也会屎的. appreciation 的同义词是什么,以t开头 The street is lived with many trees.这句话有语法错误吗?怎么翻译啊?然后be live Freeze-Framer 玩具设备 请问Design Freeze是什么意思原文解释如下：A Design Freeze is defined as that point in the design process when all project design freeze inputs and outputs are defined,reviewed,and finalized.It is represented as a milestone activity on th with for on under in 在什么时候用什么时候单词加ing? 英语填空 供选单词 out after with in at under of onwe often ciean the classroom__class.some fish are swimming__the water.Look__the birds.They are eating__the floor.I'm tired.Let's sit __the tree.Don't take books__ __the libeary.说明原因好 lily and i did not go to the bookshop yesterday___of us has read this storyso we know nothing about it A both B neither C all Dnone 30度角斜面,M块匀速下滑,当M以一定初速度上滑时, State protection中文是什么意思? 射箭运动员拉弓放箭时,这是_____能转化为_______能.我填的是动能（他不是说拉弓吗）转化为弹性势能.为什么答案上是弹性势能转化为动能（不应该是在箭射出去时候的吗） 英语翻译不要用google的翻译，没用 do you fell my world和 can you fell my world该怎么翻译?我可以抱你吗宝贝?翻译成英语是 elder的比较级是什么elder是形容词,那比较级和最高级是什么? 形容词变比较级怎么变? 比较级里面,直接加er的有哪些词?急10个一共要10个 It's kind of him to help me.的主语是?to help me 为什么不是主语?