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郑二头头
three hundred meters 名词性短语three hundred-meter 形容词性短语
吃了个肚歪
three hundred metresthree hundred mthree-hundred-metre three hundred metres long
天天快乐1414
My home is three hundred meters far from the school.
追梦1区14号
my home is 300 meters far from school
小薰1988
My home away from SCh00I 300meterS
闪电小白猫
This river is three hundred meters long.
我们是MJ
如果选B,about后就要+a,long后也要+river ;但主语已经有the river 了,所以要选A,不选B。
笑语莹莹
B 要说。。。a three-hundred-meter-long river
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