be made of/from/in的用法 — 英语词汇题
题目
根据句意及中文或首字母提示，补全下列句子（每空一词）：1. The table is made ______ wood, so it feels natural. 2. Paper is made ______ trees, so we should save every piece. 3. This kind of bicycle is made ______ Shanghai. 4. The bag is made of recycled plastic, which is good for the e______ (环境).