根据首字母提示,完成下列单词的拼写,使句意通顺。
Every minute , about 261 babies are bin the world. The world's population _gfaster and faster. It has become one of the biggest social ptoday. China has the largest population in the world .There are about 1.3 bpeople in China .China has carried out some policies to cthe population,and these policies have worked well.