While we_____(wait)for the bus,a girl _____(run) up to us
后面那个填ran还是is running?为什么?
人气：267 ℃ 时间：2019-08-22 09:42:22
解答
were waiting
ran 过去式
正当我们在等公交车的时候突然一个小女孩跑过来
前面的“等”是段时间,后面的“跑”是点时间
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