दिए गए वाक्य का सही पैसिव वॉयस (Passive Voice) विकल्प चुनिए: 'Some economists still oppose equal pay for equal work.'

Select the option that expresses the given sentence in active voice: 'A notice will have been sent by the town plan authorities to Mr. Smith for vacating the house by the end of the month.'

Select the correct passive form of the given sentence: 'Do you like this yellow stone?'