was said that was how the Chinese first raised silk worms.A. It;thatB. People;itC. They;th

问题补充：

was said that was how the Chinese first raised silk worms.

A. It;that

B. People;it

C. They;that

D. Somebody;it

答案：

(答案→)A. It;that

B. People;it

C. They;that

D. Somebody;it

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