用should或shouldn’t填空，完成下列句子。
You ____ walk in the corridor. You ____ run.
You ____ talk in class. You ____ listen to the teacher carefully.
You ____ push your classmates. You ____ be kind to them.
You ____ be noisy or run in the swimming pool. You ____ line up.
You ____ always listen to the older people. You ____ talk loudly.
