一道sat语法(IE)英语问题
agreatgrayowlflyinglowacrossaforestclearing,itswingsbeatingquietlyanditsultrasensitiveearstunedtothefaintsoundsthat……
答案是在“flying前面加was”,这我明白,可是为什么后面是beating?按理说后面有and,beating应该和tuned一致才对啊?
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