The candidate 'did his homework' [=studied the issues] before the debate.
She started her algebra 'homework'.
Please do/finish your 'homework'.
(..) If she is to tell the truth, why should she beware? Termeh... Yes? Come with me. - I have homework. - Leave it for now. Look, imagine that I am her. Is this right? When someone is thrown they fall straight. (..)2011 A Separation
(..) You told him? Get your stuff. We're going to grandma's. What about grandpa? We'll take him too. I have homework. I'm not coming. - You'll be on your own... - Fine. You'd better not call. He doesn't even ask me to stay. (..)2011 A Separation