请指出下列各句中的错误,并改正过来.
请指出下列各句中的错误,并改正过来.
1.When we grow up,we became stronger.
2.When I was in the bathroom sally knocked at the door.
3.I feel happy,when I get high marks in the exams.
4.They did not used to watch TV at 9:30.
5.Does he use to do morning exercises?