in a heavy rain should be an unforgettable experience.
A. Caught
B. Catching
C. Being caught
D. To catch
网友回答
A. Caught
B. Catching
(答案→)C. Being caught
D. To catch
解析：考查动名词短语做主语。Being caught in a heavy rain在句中做主语。固定词组Be caught in遭遇…。句意：遭遇暴雨应该是一次难以忘记的经历。