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请问选择哪一个？为什么？Wewerebeginningtodiscusssuddenlyagreatearthquakehappened.A.whenB.whileC.u...
请问选择哪一个？为什么？
We were beginning to discuss suddenly a great earthquake happened.
A . when B. while C. until D. before 展开
We were beginning to discuss suddenly a great earthquake happened.
A . when B. while C. until D. before 展开
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答案应该选A，when
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追答
were doing sth when ... 正在做某事，突然（就在此时）发生了什么事
汉义：我们正开始
讨论，突然大地震发生了。
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