निम्नलिखित पैसिव वाक्य का सही एक्टिव वॉइस रूप चुनें: 'His hair is being cut by a professional.'

In the following sentence, four words given in bold are marked as (A), (B), (C), and (D). Choose the pair(s) of words that need to be interchanged to make the sentence grammatically correct and meaningful: Tribulations (A) in the face of stoic (B) is a trait found in adversity (C) individuals who refuse to let equanimity (D) disturb their inner peace.

In the following sentence, four words given in bold are marked as (A), (B), (C), and (D). Choose the pair of words that need to be interchanged to make the sentence grammatically correct and meaningful: The broad (A) meeting was held in surreptitious (B) daylight to avoid suspicion (C), although the clandestine (D) nature of the topics discussed remained unchanged.