16.That is ___ paper came into use in China.应选什么?为什么?

16.That is ___ paper came into use in China.应选什么?为什么? That is ____paper came into use in China. Everyone knows that paper ____ in China As is known to all that paper is made in China.改病句 英语初级问题.Last year it came into use为什么不用had came into use这是过去完 _______is that paper was first made in China. ___ is well-known is that China is rich in natural resources 英选择一道 paper money was in use in china when Paper money was in use in China when Marco Polo visited the 17.Paper money was in __ use in China when Marco Polo visite in use 含义在Paper money was in China when Marco Polo visited t 这个句子有点不懂.Paper money was in use in China when Marco Polo vis