12. A large number of new species (a) / is not yet discovered by scientists in different parts of the world. (c)/ No errorSolution: the error is part (b) of the sentence. “A number of, a large number of” is always followed by a plural noun and a plural verb. In part b, the verb should therefore be “are” instead of “is.” These names are always plural and a plural verb is used with them. Rule 13 When two themes are linked by “AND,” the verb is pluralistic. B) If two different singular substitutions express an idea, the verb should be in the singular form. Or the two individual nouns/countless nouns are used in pairs, then the verb used will be singular. Even in individual materials, we use a plural verb. 7. Not only India, but also (a) / several other countries have agreed to reduce CO2 emissions.
(c)/ No errorSolution: the error is part (b) of the sentence. The verb should be “have” instead of “having.” Rule 7 When sentences start with “there” or “here,” the subject is always placed behind the verb, so be sure to identify it correctly. Examples: Article 15 Article “THE” is used only once if both names relate to the same person or to one thing. If both names refer to different people or things, the article “THE” is used before each name. In such cases, the verb will be plural. If the subject is followed by words like “with, as well as” with, then the singular verb follows the singular subject. Rule-16 If two different singular substrates express an idea, the verb should be in the singular form. Topics don`t always come before verbs in questions. Be sure to identify the pattern before choosing the right verb form. Air pollution and waste are followed by “with,” so it takes a singular verb “Is.” Rule-2 If the percentage or part of something is mentioned with the plural, the plural verb is used. For example, 30% of Indian women are educated.
Rule 20 If binders such as, with, “so” accompanied by etc.