实验室制取氧气的原理

Emily and Wendy are twin sisters改成一般疑问句. Emily and Wendy are twin sisters.I am good at English.My school is very clean.把以上英文改写为一般疑问句、肯定回答、否定回答 歌曲We can work it out歌词整个意思是全部意思, twin sisters与twin sister的区别 one and two __threeA isB are one two three and hihihi 副歌是one and two and three four wu女生唱的韩国歌 应该是新歌在长春MYFM880上面听到的 韩国歌 女生唱的 声音比较有磁性one and two and three four 是这么个词.真是找不到. Jack didn't go to school yesterday because of his ______(ill) Twins sister和Twin sisters有什么区别,什么时候用Twins sister,什么时候用Twin sisters. twin brother指是双胞胎兄弟还是双胞胎哥哥（弟弟）?twin brothers 指啥?twins brother指啥? ____（他）twin brother is a worker________(他们）are twins the school bus ---(leave)at 7.30 every morning Half of the class ______ most of the work. Some of the work_____ really difficult.A.have done ;isB.has done ;areC.has done ;isD.have done ;are急 Half of the class ___ most of the work,The rest ___ really difficult.a.has done; are b.has done; is c.have done; is d.have done; are 应该选什么 、为什么 Sorry,she ____in .____ that 填单词 85.A：You _____(not be) at school last Friday.Where ____(be) you?____ (be) you ill?　B：No,I _____(be).But my mother ____(be).I ____(stay) at home and_____(look) after her.A：I _____ (be) sorry _______ (hear) that.______(be) she better now?这段 A:_____is Amy B:She is _____ there Amy loves ________(swim)and she is __________(fun)) Do you know Amy?She is a polite and (help)girl.How many (carton)of milk would you like,Madam? --- two exams to worry about ,I have to work hard this weekend .A with B so for C because of--- two exams to worry about ,I have to work hard this weekend .A with B so for C because of 上面说 with 构成独立主格结构表原因 ,D 不能接复 He is absent because he is ill.Tom goes to that place by bus.的提问又是什么 1 they like swiming in summer 对划线部分提问,划线部分是in summer he absent from school because he was ill.-is -does -did -was People like t___ g___ s___ in summer jim has a sister her name is kate we like___ a:him b:her c:she为什么?》 Lily has a good friend,Her name is Wang Ran.She is from China.She is ten years old.She has long black and a snall mouth.She is tall.Wang Ran likes sports and music.She can sing many English songs.But Lily just sports.She can't sing well.Look,they are the shoes are far more expensive than i expected.其中,far more expensive the shoes are far more expensive than i expected.其中,far more expensive 此处用法. The oranges are more expensive than apples改为同义句像 The oranges'___ ___ ___ than the apples' she was very sorry that she did____(bad)in the long jump An underground train can go swiftly between stations.a.quick b.slowly c.fast d.in a hurry Underground trains run much faster than buses.(保持原句意思）Buses run much______ ______ than underground trains. underground trains run fast----stationsA besideB betweenC next toD from