题目内容
【题目】The discussion alive when an interesting topic was brought in.
A. was coming B. had come
C. has come D. came
【答案】D
【解析】
句意：当引入一个有趣的话题时，讨论就活跃起来了。考查时态辨析题。根据when…was brought in可知，come也是过去发生的动作，需用一般过去时，故选D。
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题目内容
【题目】The discussion alive when an interesting topic was brought in.
A. was coming B. had come
C. has come D. came
【答案】D
【解析】
句意：当引入一个有趣的话题时，讨论就活跃起来了。考查时态辨析题。根据when…was brought in可知，come也是过去发生的动作，需用一般过去时，故选D。