必修三Unit1词汇与短语运用 — 英语词汇题
题目
根据句意和中文提示补全单词，每空一词。The farmer used a new method to protect the soil and increase the h_______（收成）. After years of hard work, the villagers finally achieved their goal. The experience taught them that patience and teamwork are e_______（必不可少的）.