Identify the incorrect sentence.
Show answer & explanation
Correct answer: A
Explanation
This sentence contains a subject-verb agreement error. The subject "cities" is plural, so it requires a plural verb, but the sentence uses the singular verb "is".
Furthermore, the verb tense "is being affected" contradicts the time marker "yesterday", which requires the simple past tense.
The correct sentence should be "All of the cities in California were affected by the rain yesterday."