问题描述: These knives are made ( ) metal and wood?from?of?by?in? 1个回答 分类:英语 2014-09-17 问题解答: 我来补答 of (小刀是用金属和木头做成的,可以看的出来)make of 的原材料是看的到的,比如make of wood make from的原材料是看不到的,比如Paper is make from trees.从纸上是看不出一棵树滴. 展开全文阅读