The knife is made of metal and wood换一种形式如果前面改成these knives are made of ……那后面的metal and wood 是否应该改成单数?那如果后面的构成时可数名词呢？那是否应该改成复数？

the knife()iron A.is made of B.is made form C.isade in D.is made up of what is that knife on the shelf in the kitchen made of? The knife is made (a ),It is made in Japan括号里填以a为首的单词 Year of the Knife 歌词 Year Of The Knife 歌词 The shirt ______China. I prefer the clothes_____silk.A. is made in, made of B. made in C. is made in, is made of D. made in , made of The chair is made of wood. What is the sun made up of? the clothes are/is made of cotton? The new book ____three partsis made ofis made fromis made into is made up of The jeans ( )cotton.A.are made of B.are made in C.is made of D.is made from All the things?paper.a.is made of /b.is made in/c.are made of/d.are made in The spoon is beside the knife. the spoon is[ ]the knife[[]里填啥?】 英语一个问题the great wall is made of brick and stone用is made of还是was made of the newspaper is made of paper 还是made from 是不是应该是made of 为什么教案书上说是made from The earths surface is mostly__water.made from B.made of C.made up of D.made up Is the knife ___ your right hand?