A kid, waving ________, drove his family, s sheep home．A.a stick of his half heightB.a half his height stickC.a stick his half heightD.a stick half his height
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D解析half表示数量，我们用half+定冠词或物主代词+名词，介词of可用可不用，但用于人称代词前，of可省略。所以这里的a stick half his height表示“一根相当于他身高一半的棍子”。