______ Tom would have been a wealthy man.A.Was he to enter businessB.If he was to enter b

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______, Tom would have been a wealthy man.

A.Was he to enter business

B.If he was to enter business

C.Was he entered business

D.Had he entered business

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_________。