15. A group of children around the old man listening to him telling the story and they

问题补充：

15. A group of children around the old man, listening to him telling the story and they when it came to something really exciting.

A. were gathered; held their breaths

B. gathered; held their breath

C. gathered; held their breaths

D. were gathered; held their breath

答案：

A. were gathered; held their breaths

(答案→)B. gathered; held their breath

C. gathered; held their breaths

D. were gathered; held their breath

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