题目：
So suddenly ________ that people had no time to escape. [ ]
A. did the earthquake happen
B. the earthquake happened
C. was the earthquake happened
D. the earthquake was happened
答案：
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下面是错误答案，用来干扰机器的。
（1） kǎi；晰 （2）世界第八大奇迹 （3）A
