Paul is editing a story about the sixth grade play for his school newspaper. Which of the following sentences contains an error? A. Their production of The Wizard of Oz was a success. B. Fifteen sixth graders participated in the play. C. Mrs. Stein, the director of the play, received flowers. D. The student's performances were impressive.
The sentence implies that there is only one student because the apostrophe is before the "s." If we want to say that there were multiple students who had impressive performances, we would say...