see的过去式

The report is well written,isn't it A I'm afraid it isn't .B Yes I agree.为什么选A I think it helps 和I afraid it isn't interesting这里的helps 是什么词性?第二句,it 的后面怎么就跟了be动词了呢?it 不是属于前面的句子吗? CO(CO2)等、分别用什么试剂可以将以下括号类的杂质除去（只要求写出所加物质的名称或方法几乎学方程式）CO(CO2)、KCl(KCl3）、NaCl(Na2CO3)、KNO3(KCl)、FeSO4(CuSo4）、Cu(NO3)2(CuSO4) ( )is myfather is brother.( )is my aunt is child括号内应填什么 祛除CO2中少量的CO所用的试剂是那个,化学反应方程式表示为什么 CO（CO2）试剂名称不知道你们是怎么看出它是氢氧化钠的。 怎么写明信片? 明信片上该怎么写?1、我认了一个和我同级但不同校的哥哥,我们以前在一个班里,快过新年了,给他的明信片上怎么写?2、我有一个小学同学,是男生,他连续两年给我写明信片了,我该怎么给他回 Is it fine today?-Yes,it’s.这句话错在那 Is it fine today?-Yes,it’s.这句话错在哪儿? My aunt is_______.A:a teacher and a writer B:the teacher and writer C:teacher and writer D:a teacher and writer I am your air & You are my sunshine什么意思 I AM Sunshine i am summer but you is only sunshine in it you are my sunshine when i realized,so i know,i am waiting for you. 墙这个单词怎么拼?墙的英语单词怎么拼? Fat and sugar（）healthy than fresh fruit.is lessis moreare lessare more fat and sugar () less healthy than fresh fruit.是 are还是is Fat and sugar()healthier than fresh fruti and vegetablesA is B are C for bed 墙字怎么组词 墙能组什么词 为什么我用CD4046做的锁相环频率总是在变化?不是稳定的呢? she has sent the e-mail to me __errorA.with B for C by D in 求proteus中CD4046锁相环调频电路图求大神能给个锁相环直接调频电路图,正弦波 帮忙理解给我听下,lucy told me__she had bad cold last week.这题空白处该填THAT还是WHAT?为什么要填这里的其中一个答案?怎么分辨该甜哪个 go home 麻烦的 go big or go Eat less food which （）sugar and fat,or you will put on weight easily.A.includes B.covers C.contains D.holds 把It is nothing but your unique sweet flavor that makes me love you,but my intense love could on翻要准确一点哦,语言尽量优美一点 my plan for the new 下面是：what i want to do in my daily life1.get up______2.3.4.5. That's because without your sweet loving I am nothing but an unfortunate lady-man. The program was stared by the Ministey of Education and the Chinese Young Pioneers.英译汉