碳碳三键几个不饱和度

faced with challenges,you should believe your courage is_makes a difference.此空正确答案是what,为什么不能用which?都是做从句的主语啊! faced with challenges,you should believe your courage is_makes a difference为什么答案是what which怎么不可以啊~我为什么不能理解为定语从句.再说它也不是没有先行词,先行词不是courage吗? all these things will be talked ------next week前用哪个介词 用定语从句完成句子We are talking about _____________(我们在银行里看见的人和事).The building _____________(房间又大又亮) is our teaching building.He failed the test,______________(这让我们难以想象).This is __________ 用定语从句完成2个句子：1..His brother always encourages him to go to college.His brother is a doctor.2.Where is the beautiful picture?You bought it last week.即改成定语从句 his it is photo family用所给词造句 巴西的著名节日是什么? 英语drink怎么发音?drink 音标 driŋk 这里的d不是发d的音了 要变成其他的音请问 要变成什么 drink怎么发音?我怎么听着有两种?一种好像是：将ke 另一种是：dr ing k.到底那种是正确的发音? down和drink中的d读音相同吗 each other等于啥子 eather等于each other吗? 巴西是闻名世界的? i think you should go and buy some m______ for it.前面还有一句：you have got a cold.i think ...... sweep的现在进行时 英语wash-washing和ciean-cieaning和sweep-sweeping的意思是啥 I can't help you__the house this afternoom.A,sweeping'B,sweep;C.swept,Dwith sweep Why( )he have a talk with her?( )he do it tomorrow?填情态动词 I have never seen her,let it alone to talk with her.我从未见过她,更不用说和她说话了.这句话英语这么说对不?尤其是后半句!那用英语怎么翻译这句话啊？要用上let alone这个词组 关于雅思作文怎么写雅思大作文第一段到底用不用写自己的观点 还有哪类作文适合从一方面或两方面写 以及大作文的段式 你写的作文是什么意思I am a student from Hope Middle School.Now I will introduce my campus life brie at Please home rest and seay 排成一个句子 I am an outgoing girl called xxx who is from No.1 middle school.这句话有没有错? Please sit down and has a rest for a while.这句话对吗 那位高手能帮我批改一下雅思作文,这是本人的处女作,毛病可能很多,希望有高手能帮帮小弟彻底修改一下!给个分数,最好能提一点实质性意见,topic:some people think music is just a form of entertainment wh 一篇雅思作文,小弟才疏学浅,希望能给出一个具体能得几分,能给一些建议更是感激不尽.2.Some people think immigrants shoul accept the new culture as their own.Others believe that they should keep their own culture.Discuss 连词成句并译成中文 dangei,sign,mean,second,does,the(?) the,cage,is,tiger's,on,the,interesting,sign(.)连词成句 Ban-i-ZOO-ski这个发音为什么不吉利?（英语）Ban-i-ZOO-ski这个发音为什么不吉利?这个是读音，这个是那个读音的来源，Baniszewski它应该读成Ban-i-SHEF-ski，但文章里面提到Ban-i-ZOO-ski的发音带有不详 （高一英语）get rest 和 get some rest能直接用get rest吗?这两个短语有什么区别吗? I must go to the grour's to get some groceries 是什么语法,里面的to有什么用,是什么含意 有语法专家吗.get stuck请用语法解释一下.还有,as many ways as possible,的词 性,且造个句子.