题目内容
It was on October 3, 2011 _____ a big fire happened in Beijing, _____ was a great shock to lots of people.
A. when; that B. that; when C. when; which D. that; which
D

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题目内容
It was on October 3, 2011 _____ a big fire happened in Beijing, _____ was a great shock to lots of people.
A. when; that B. that; when C. when; which D. that; which
D