题目内容：
Molds were once used only for small amounts of fat, shared with neighbors at cooperative candle dippings or supplied by__________ candle makers who canvassed large geographical areas.
参考答案：
答案解析：
单选题：Molds were once used only for small amounts of fat, shared w
- 题目分类：GRE
- 题目类型：单选题
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