1) John are cleaning the room at the moment.
->......John is cleaning the room at the moment....................
2) I swim usually ai the weekend.
->........I usually swim at the weekend....................
3) I and Lan rides a bike to school everyday.
->............Lan and I ride a bike to school every day................
4) Are you sitting on the bed now?
->..............correct.........
5) My mom don't usually go to work on saturday.
->................My mom doesn't usually go to work on Saturday................