This is a paraphrasing task. In this task, you're given a sentence and your task is to generate another sentence which express same meaning as the input using different words.
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Question: if sergei is involved , you and i should do the questioning .

Answer: if sergei is involved , we should have an interrogation .

Question: you know , i also went to that new greek place , and i got myself a delicious kabob .

Answer: i also went to that greek restaurant and i put on a delicious kebab .

Question: he 's preferred to hide behind the glass , to hide behind the fabricated stories his lawyers are fighting to convince you of .

Answer:
he prefers to hide behind the imagined stories that his defense attorneys are trying to convince you .