College Prep Writing
How well can you edit your own work? Study carefully the underlined parts of the sentences for grammar and usage errors, and choose the button corresponding to the error. There is no more than one mistake per sentence, and some sentences have no mistakes. Choose (E) if the sentence has no mistakes.
(A) All students need to have (B) his or her own calculator for (C) their math (D) classes. (E) No error.
Answer: B is incorrect.
Explanation: His or her is incorrect because the pronouns his and her are singular. The subject, all students, is plural, so the correct possessive pronoun is their.
(A) Some of them (B) are good, but (C) none of them (D) is excellent. (E) No error.
Answer: E, no mistakes.
Explanation: A common mistake is to use a plural verb with the singular pronoun none. None means not one, and it is singular.
Now try these: