Mary couldn't run very fast because she had a sore back.同义句
问题描述：
Mary couldn't run very fast because she had a sore back.同义句
答
Mary had a sore back so that she couldn't run very fast.
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我等着你采纳哟,不明还可以追问的,嘻嘻!Mary couldn't run very fast___ ___ her sore back.because of