while we__(wait) for the bus ,a girl ___(run) up to us 应填什么为什么?

问题描述:

while we__(wait) for the bus ,a girl ___(run) up to us 应填什么为什么?

while we_were waiting_(wait) for the bus ,a girl _ran__(run) up to us
while 的句子主句都用进行时哦,从句用过去式或者也是进行时的!
O(∩_∩)O~

were waiting.ran