I then listened to the boy______the lesson written on the blackboard.

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问题 I then listened to the boy______the lesson written on the blackboard.

选项 A、read
B、reading
C、to read
D、having read

答案A

解析 像hear一样,listen to后面也可以跟带动词原形或现在分词的复合结构,本句中听的是“读”的全过程,所以应选不定式。
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