问题
选择题
Tom enjoyed himself so much _____ he visited his best friend in Beijing last year.
A. that B which C. when D.where
答案
C
题意：去年汤姆在拜访他的最好的朋友时玩的很愉快。此题受so … that 句式的影响，易误选A，句中when 引导时间状语从句。
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