Smith regretted ______ to the meeting yesterday.A.not goingB.not having been goingC.not to

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Smith regretted ______ to the meeting yesterday.

A.not going

B.not having been going

C.not to go

D.not to be going

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_________。