______the children to bed, she began to correct the students’ exercises.

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问题 ______the children to bed, she began to correct the students’ exercises.

选项 A、Sending
B、Being sent
C、Sent
D、Having sent

答案D

解析 本句逗号后的句子结构完整,所以空格处要填入非谓语动词。“哄孩子们去睡觉”这个动作发生在“批改作业”之前,而动作send是由she发出的,两者是逻辑上的主动关系,所以应该用现在分词的完成时having sent,分词短语在句中作时问状语。
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