William, as well as his friends，________invited to my birthday party the day before yesterday.A.isB.wasC.areD.were
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B解析本题考查主谓一致和时态。当主语后跟由as well as, with, together with, along with等连接的词组时，其谓语动词不受这些词组的影响，与前面主语的单复数一致。再结合the day before yesterday可知用一般过去时。