The sound of the fierce wind ___the girl so that she couldn't stay at home alone.(frightening)

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The sound of the fierce wind ___the girl so that she couldn't stay at home alone.(frightening)

frightened
不明白的再问哟,请及时采纳,多谢!

frightened
用动词形式frighten(vt.)的过去式,因为从句中用的是can的过去式could,时态要保持一致