Question

The teacher taught grammar. He counducted an exam on grammar (perfect participle)​

Answer 1

Answer:

The teacher had taught grammar. He had conducted an exam on grammar.

Answer 2

Answer:

having taught grammar, The teacher conducted an exam on grammar.

Explanation:

perfect participle

Formula:-

having+been/v3

as there is no be form verb given in the question i continued with having+v3 formula.

as the subjects are same i removed the first subject in the amswer.