while jenny __(walk)her dog,a man came along and asked her the way怎么填,,一定要解析

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while jenny __(walk)her dog,a man came along and asked her the way怎么填,,一定要解析

while jenny __(walk)her dog,a man came along and asked her the way怎么填,,一定要解析
while jenny __(walk)her dog,a man came along and asked her the way怎么填,,一定要解析

while jenny __(walk)her dog,a man came along and asked her the way怎么填,,一定要解析
was walking
用过去时是根据后一半的时态(came,asked),用进行时态是因为:一,while后面接持续的动作;二,根据整个句子的意思判断.