To what extent are school mottos indicative of the need to distinguish appearance from reality

Where sarah live? a. are b. is c. do d. does

Which sentence is correctly punctuated? a. i haven’t found a new job, and i don’t plan to look for one until i have to. b. my work is piling up—day to day—and i can’t seem to get caught up. c. i know things could be worse (they have been in the past).

Could someone me with this question?