Bill is in the classroom.doing 什么homework

Bill is in the classroom,doing( )homework Bill is in the classroom.doing 什么homework Many boys is doing them homework in the classroom.改错 He is doing his homework in the classroom now.改为一般将来时 they are doing their _____(homework) in the classroom They're in the classroom doing thier homework.为什么要用doing ,能否 He id doing his homework in the classroom now.(改为一般将来时） when i saw him,he was doing his homework in the classroom 同义 there are all doing their homework in the classroom 译文：英语!急 (When i was doing my homework in the classroom),they went ou students all their are in of doing homework classroom the my Meimei is doing homework _____(careful carefully) in the roo