Exercise-10 Choose the correct verb form, singular or plural. This subject compliance test verifies your understanding of using the correct verb form depending on the subject. Sometimes you need a singular verb. Sometimes we need a plural. Do you know when to use everyone? Find it with the exercise below. Exercise-4 Find the correct form of the verb given in the following sentences. Exercise 6. Emphasize the theme of the missing verb and fill in the gaps with “is” or “are.” Your grammar is assessed in both the TOEFL iBT voice sections and the writing sections. Therefore, you need to create grammatical sentence structures. One area of grammar you should worry about is the subject-verb agreement. Correct subject-verb matching is important for TOEFL iBT to speak and write, as it shows human iBT toeflique evaluators that you have control over your sentence structures.