The swimming pool is ______ once a week and filled with fresh water. A: drained B: pierced C: pinched D: stooped

He _____ his boots clean before coming into the house. A: scraped B: took away C: pinched D: polished

They ______ those who didn't conform to their ideas, and took advantage of those who agreed with them. A: explored B: persecuted C: extended D: pinched

They ______ those who didn't conform to their ideas, and made advantage of those who agreed with them. A: explored B: persecuted C: extended D: pinched