Select the option that expresses the given sentence in active voice: 'Trigonometry has been taught by him for donkey’s years.'

Question

Select the option that expresses the given sentence in active voice: 'Trigonometry has been taught by him for donkey’s years.'

Options

A.

He had been teaching trigonometry for donkey’s years.

B.

He has been trigonometry teaching for donkey’s years.

C.

He is teaching trigonometry for donkey’s years.

D.

He has been teaching trigonometry for donkey’s years.

active voicepassive voicegrammarsentence transformation

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