要建立一个良好的班集体，形成良好的班风，我们应该（   ）
①各尽其力，充分发挥自己的特长，为班集体建设添砖加瓦
②自觉遵守班规班纪、校规校纪、敢于同违纪行为做斗争
③尽量保持一团和气，少指出别人的错误行为
④从身边的小事做起，用实际行动营造良好的班风

    There is a man and he calls the police when he loses a pet. He a lways asks the police to help him look for it.

    “I lost my pet bird，”he tell the police one day.“She can sing songs. Can you find her for me?”

    “I'm sorry，”the policeman says.“It isn't our job（工作）to look for birds. If you leave a window open in your house，the bird may come back.”

    Another time，the man calls the police and says，“I lost my cat. （A）你能帮我找到他吗？He can  talk. ”

    “I'm sorry，”the policeman says.“（B）It isn't our job to look for cats. You should put the telephone down quickly. Maybe（也许）he is calling you now and tells you where he is. ”