No, the word its is a singular pronoun , the possessive form of "it". The plural form of the possessive pronoun "its" is theirs..
The plural form of the possessive adjecti…ve "its" is their.. (MORE)
Actually did is the past sense verb of the original verb 'do'.There is no bifurcation as singular and plural for the verbs.Though you use it for singular person or plural pers…on you shouldconsider did only. For example: 1. Why did not he come to college yesterday? 2). Why did not they come to tution yesterday? (MORE)
Have can be both singular and plural, but has can only be singular. So you are partly right. Have is used with the first and second persons singular and with all perso…ns plural and plural noun subjects: I/You/We/They have a large fat dog . The boys have a large fat dog. Has is used only with the third person singular and singular noun subjects: He/She has a small dirty dog . The doctor has a small dirty dog (MORE)
The word 'which' has no plural form. The word 'which' is a pronoun when not followed by a noun: Interrogative pronoun: Which is the best cheese for this dish? Relative p…ronoun: I can't decide which is best. The word 'which' is a determiner when followed by a noun: Which movie would you like to see? I can't decide which movie. (MORE)
The possessive adjective 'your' functions as a singular or plural pronoun. Examples: Dad, your dinner is ready. (singular) Boys, your dinner is ready. (plural) Jack and Jil…l, your dinner is ready. (plural) (MORE)
The plural form for the singular, subjective he or she is they . The plural form for the singular, subjective it is they . The plural for the singular, objective it … is them . And even though you didn't ask, I will throw in for no extra charge: The plural form for the singular, objective him or her is them . (MORE)
The pronoun 'who' functions as both singular and plural , asan interrogative pronoun and as a relative pronoun. Examples: Interrogative pronoun Who is your new math teac…her? Who are your visitors? Relative pronoun Mr. Madden, who teaches math and chemistry, is my newteacher. The visitors, who are my cousins, are staying for theweekend. (MORE)