①“一边倒”

②“打扫干净屋子再请客”

③“不结盟”

④“另起炉灶”

    I have two pen ____. They ____ Zhang Ming and Zhao Ping. Zhang Ming is ____ Shanghai. Zhao Ping is in Beijing. We like ____. We are all in sports clubs(俱乐部) at school. I ____ play basketball. Zhang Ming likes ____. And Zhao Ping often ____ ping-pong. ____ we like different(不同的) food. I like vegetables. Zhang Ming likes ____ hamburgers and Zhao Ping eats lots of fruit every ____.

某中学生向镇政府提出增设法制专栏，帮助人们了解宪法修正案的内容。该同学的做法是在行使公民的（  ）

在数$\frac{4}{3}$，﹣1，0，π，﹣4$\frac{1}{2}$，﹣0.02中，

①正数____ ； ②负数____ ；③整数____ ；④分数____ .