◎ 题干
Mother told Jim to watch the milk until it boiled and then _________ off the gas.
[      ]
A. turn
B. turning
C. turned
D. having turned
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“Mother told Jim to watch the milk until it boiled and then _________ off the gas. [ ]A. turnB. turningC. turnedD. having turned…”主要考查了你对  【动词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。