锌﹣空气燃料电池可用作电动车动力电源，电池的电解质溶液为KOH溶液，反应为2Zn+O₂+4OH^﹣+2H₂O═2Zn（OH）₄^2﹣．下列说法正确的是（  ）

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.

拥挤的公交车上，各种声音此起彼伏，几个人在高声交谈，一位年轻人用手机大声播放音乐，车上一位乘客的手机铃声忽然响起，这位乘客对着手机大声地喊：“我听不见呀！你大声点！”请评价交车上人们的行为。