Fill in the blank with a suitable pronoun:
_______ is always sunny in our city.
An impersonal pronoun is commonly used to speak about impersonal things/ideas. ‘It’ is an impersonal pronoun that is used for this purpose. In the given sentence the verb denotes an impersonal action, i.e. an action that is not performed by a person. In such a case ‘it’ is used as the subject. Thus option D is correct. On the other hand, ‘Mine’ and ‘Yours’ are possessive pronouns that are used to talk about things that belong to people. Since the sentence doesn’t speak about belonging, options A and B are incorrect. Similarly ‘What’ is an interrogative pronoun that is used to pose a question, which is not apt here as the sentence is not an interrogative sentence. Thus option C is incorrect.