闭环系统的特征方程

Do help yourself to some fruit,___?为甚么要填 won,t you? always be yourself ,always enjoy yourself 谁可以告诉这句英文是什么意思啊? be worride about同意词组 Get your self get yourself high 意思是? GET HIGH的歌词谁有啊 是飞儿的Get high~ 如果英语的一句句子中同时出现了情态动词、助动词、be动词的话,这个句子的反义疑问应该怎么改?比如：1、They must have come to school,2.He must have watched the TV play the other day,3.The doctor must have been 反义疑问句You must have been there before,______?A.have you B.did you C.haven't you D.didn't you请说明理由,还有一道You must have been in Beijing last month,_______ A.aren't you B.did you C.weren't you D.didn't you 高中英语反义疑问句These trees must have been planted three years ago,____?A.weren't they B.mustn't they C.didn't they D.haven't they为什么不选D? something exciting还是exciting something something exciting happened 作文以something exciting happened to your this morning 为作文题 也作文 something else exciting 还是something exciting else给出ELSE 的具体用法 Let us do something exciting. Tommy asked me to tell him I_____ knew用anythigsomething,someone,anyone,nobody,nothing,none,everyone,everything smoke as ___ as before ,用much还是many为什么.答案是much,但香烟是可数名词.抽烟抽得多.为什么不可以用many. 有谁知到高中反义疑问句的语法 英语翻译[00:13.18]I couldn't come closer[00:16.24]I couldn't let go[00:18.19]Didn't wanna get over you[00:21.70]Don't wanna know what i know[00:24.22]Been counting on angels[00:27.20]Stead of facing the truth[00:30.21]There's dust on my shadow[00 Jim is waiting for Danny_______the tree Jim stands under the tree(改为现在进行时) Jim stands under the tree.(改用现在进行时） They don't understand,这是谁唱的我手机有这首歌,不知道什么时候下的,听起来像是懒妮唱的,声音像曲风也挺像的,不过百度不到这首歌的样子,谁听过的能给我歌词吗? get 如题. If they don't understand something,they will ask other students online or E-mail their teachers.Computers are becoming more and more popular indeed.请问此句的汉语意思是什么? get on one's high Why don’t they understand her?这个句子有没有Why do they don't understand her?这种说法? likes和is like有什么不同? 望洞庭 怎么有的是遥望洞庭山水色,有的是遥望洞庭山水翠 到底哪个是对的? dell中的一张光碟 application already installed on your computer 里面的东西是干嘛的能够用来装系统吗? Friendship is like money,easier made than kept 为什么不用 to be kept?难道因为than一定加动词原形do 48-According to the passage ,you should follow____________rules if you want to be healthy .A-fifth B- five c- fourth d-four.Here are some rules you should follow cure clarifying foam cleanser是什么意思 gentle toning lotion是什么意思