Here are the correct answers for the sentences you provided:D. Mine (This is the possessive pronoun that agrees with "the red jacket.")D. Whose (This is the possessive pronoun that asks about ownership.)A. children's (This is the possessive form of the plural noun "children.")B. usually goes (This is the present tense, third person singular of "go" in the correct order.)C. is living (This is the present continuous tense, third person singular of "live" to indicate an ongoing action.)D. Does he live (This is the correct question form with the auxiliary verb "do" and the third person singular form of "live.")B. doesn't want (This is the correct negative form of the verb "want" in the third person singular.)A. hardly ever works (This is the most idiomatic way to express the idea of rarely working.)C. our friend (This is the possessive form of the pronoun "we" combined with "friend" to indicate ownership.)D. always are eating (This emphasizes the repeated action of eating on Sundays.)I hope this helps!