题目内容
The moment ______Leo will never forget is ______he joined the Air Force
A. when; that B. that; that C. that; when D. when; /
【答案】
C
【解析】
试题分析:句意:Leo永远不会忘记的那一刻是他加入空军的时候。第一个是定语从句,修饰moment,关系代词做宾语,用that或which;第二个是表语从句,引导词做时间状语,用when。故选C。
考点:考查从句中的引导词。
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