Who______that first discovered America—the New Continent?A.wasB.it wasC.was itD.did

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Who______that first discovered America—the New Continent?

A.was

B.it was

C.was it

D.did

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。