帮忙做一道改错题：A container weighs more after air is put in,（it） proves that air has weightA container weighs more after air is put in,（it） proves that air has weight这里面的it为什么错了,应该改成什么?

帮忙做一道改错题：A container weighs more after air is put in,（it） proves that air has weightA container weighs more after air is put in,（it） proves that air has weight这里面的it为什么错了,应该改成什么? 帮忙做道英语改错题, 这是一道改错题帮忙一下急! 帮忙做一道函数题 帮忙做一道题,绝对值化简条件a 帮忙做一下一道英语改错(Receive) a gift (is) (sometimes) more difficult (than) giving one . A B C D[ ] ______ 英语改错题,请帮忙修改,46.A container weighs more after air is put in,it proves that air has weight.A B C D47.The young man,to make several attempts to beat the world recordA Bin high jumping,decided to have another try.C D 48.Of the two coa 求高手做一道高中英语改错题(共十处错误) 求高手做一道高中英语改错题（共十处错误） 请高手帮我做一道c语言改错题. 求高手做一道高中英语改错题（共十处错误） 帮忙做一道英语阅读题~~谢谢! 帮忙做一道概率题呀 帮忙做一道常微分方程的题 帮忙做一道自动控制原理题 帮忙做一道填空题 谢谢了 帮忙做一道高数题 求帮忙做改错英语提