选C
since 后面用一般过去时,前面用完成时
主语是单数形式,用has been
选 C
many a＋单数可数名词”形式上为单数,但意义上为复数(意为“许多”).
若用作主语,其谓语通常与形式一致而不与意义一致(即谓语用单数)
求理由!3Q!The knowledge of yoga and what good it does for human
3个回答
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