__________ the experiment right, I tried...

__________ the experiment right, I tried again and succeeded.

A．Not having done

B．Having not done

C．Not doing

D．Not done

A 【解析】考查非谓语动词用法。I与do构成主动关系，根据句意可知没有做到对实验是在我再次尝试之前就发生的，所以使用完成式。句意：因为没有做好实验，我再试了一次，成功了。

考点分析：

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