TheBrownsheld_____theycalledfamilydayonceeachyear.A.thatB.whatC.whichD.when

发布时间：2020-08-14 05:35:38

The Browns held _____ they calledfamily dayonce each year.A.thatB.whatC.whichD.when

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B解析what既作连词又在宾语从句中作called的宾语。
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