Witnessing the explosion(爆炸) in a chemical plant in Kunshan is the most frightening experience _____...
2022-10-28 15:38:14 121次 2014-2015学年江苏如皋中学高一10月阶段练习英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Witnessing the explosion(爆炸) in a chemical plant in Kunshan is the most frightening experience ______ I have ever had.
A. that B. when C. which D. who
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