—Oh, we can't. It's dangerous. Look at the sign" ".
—Maybe not. But ________.
What does the sign mean?
——Great! ________.
①wear the school uniform ②fight with your classmates ③be quiet in the library ④run in the hallways ⑤eat snacks in class
—Why not ask your brother for help? __________________.
—It's bad for you to stay up too late. As the saying goes, "____________".
—As we know, ________. We have made great achievements in many fields.
—Well, just as the saying goes, “______.” I do hope that you will act at once.