When I came into the classroom, the teacher ______ something on the blackboard.

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问题 When I came into the classroom, the teacher ______ something on the blackboard.

选项 A、is writing
B、was writing
C、wrote

答案B

解析谈到过去某一刻正在发生的动作须用过去进行时。

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公共英语一级笔试

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