Many a student ______ made that mistake before, which is another way of saying a great many students ________ made that mistake

Over 80 percent of the population of China____ peasants.

He looked rather untidy as there were two buttons _____ from his coat.

mistaken, _____ you are mistakentoo

about your self-drive trip yesterday—Tiring! The road is being widened, and we_________ a rough ride.