题目内容
【题目】The children happily when the teacher came in.
A. play B. played C. are playing D. were playing
【答案】D
【解析】句意：老师进来时孩子们正在玩得很高兴。考查动词时态。根据提示词when the teacher came in可知这里指的是过去某个时刻正在发生的事情，应选D项。
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题目内容
【题目】The children happily when the teacher came in.
A. play B. played C. are playing D. were playing
【答案】D
【解析】句意：老师进来时孩子们正在玩得很高兴。考查动词时态。根据提示词when the teacher came in可知这里指的是过去某个时刻正在发生的事情，应选D项。