the call for help, the boys immediately rushed out to see what was going on.A. In order

发布时间：2020-08-16 10:41:17

     the call for help, the boys immediately rushed out to see what was going on.
A. In order to hear
B. Hearing
C. Having heard
D. They heard

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A. In order to hear
(答案→)B. Hearing
C. Having heard
D. They heard
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