5. The discussion ______alive when an interesting topic was brought in.

来源：百度知道 编辑：UC知道 时间：2024/05/13 03:19:09
5. The discussion ______alive when an interesting topic was brought in.
A. was coming B. had come C. has come D. came

ABCD都可以用, 只不过A不怎么合适, 因为有趣的话题入题才使讨论活跃起来, 而不是讨论已经活跃才入来.

答案应该是B或D... C之所以不太合适是因为后面用了when, 暗示过去时, 而C是现在时.

B. had come, 好像后面也需要有个had, 比如when an interesting topic had been brought in.

所以, 答案应该是D, came alive.

D

C
has come
时间上要晚于后边所说的
又是对过去的陈述

选D`
一下子变得活跃起来的，强调一瞬间,所以不用进行时表延续

d