the sound on the step, the boy rushed out to see if his mother had come back.A. To hearB.

发布时间：2020-08-17 03:41:00

     the sound on the step, the boy rushed out to see if his mother had e back.
A. To hear
B. Hearing
C. Heard
D. Hear

网友回答

A. To hear
(答案→)B. Hearing
C. Heard
D. Hear
解析：考查现在分词做状语，the boy和hear是主谓关系，用现在分词做伴随状语，句意：听到台阶上的声音，男孩冲出去看看是不是妈妈回来了。选B。
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