一支牙膏能用多久

He said,"I saw her in the street."(直接引语变间接引语） 东方宝贝动物医院怎么样 龙生龙凤生凤老鼠的儿子会打洞,这种现像与细胞中的哪一结构有关? didn‘t be 与weren't有什么区别The foreigners （）there ,But they （）the food there at first A.used to live ,didn‘t be used to B.used to live ,weren't used to C.are used to living ,didn‘t use to D.used to living ,usedn't to 过去式变否定什么时候用didn't什么时候用wasn't或weren't如例句I didn't go to the park yesterday可不可以等于I wasn't go to the park yesterday 怎样辨别及物和不及物动词? 请问联系人：杨炽洪英文翻译 什么are you?的答案是fine,thank you lose the time 全面点 最好举例 单数,复数分别用be动词那个啊 求用c h h 为开头组英文词组! 求开头是t跟f的英语短语求大神帮助最好是可以当网名的、谢 living,alive,lively,live四个有什么区别啊living,alive,lively还有live本身也可以做副词讲那么这些有什么区别呢?我搞不大清楚 为什么不能用saw?why not go to see a movie with lydia?because i（have seen） it为什么不能用saw?why not go to see a movie with lydia?because i have seen it 哪能下载西班牙语歌donde voy啊 用borrow或keep填空:I'll lend my English book to you,but you can ( ) it for only one day. He won't seen the film because he__(seen )it twice. Jack didn't go to see the film because he ______ it twice.A.had seen B.saw C.has seen D.sees features of black english要用英语回答 describe two features od black english “我要去洗个澡”用西语该怎么说?是"Me voy a duchar",或者"Voy a ducharme"吗?这两种说法对吗?能不能说“Voy a me ducho”呢? waiting for you 主语中心词的第一句 什么是主语的中心词? 语文句子中的中心词就是主语吗?我说的是中心词而非中心语.中心词能不能与主语划等号,如果不能,如何区分它们 a,an 元音因素元音因素是不是有20个?an 用在元音因素前? Mr.Zhang came up with some idea Let's ___them___A.put; out B.try;out C.give;away a和an是一个后面是附音因素一个跟元音因素么 I knew it's not important but I can't help __about it.选项 a.but to think b.thinking c.think d.to think “my favorite subject is geography,because it can help us know about the earth.”这句话有没有语法和逻辑上的错误? 在什么词前加啊?就问问什么叫br在什么词或句前加. 四年级我的梦想作文400字 aspirin可数还是不可数 为什么还有Take an aspirin?