单词拼写。根据英语首字母或所给汉语提示写出短文中所缺单词的正确形式。（共5小题，计5分）
The world has many     (问题). Look, these are homeless people. I hope they will have warm houses to l  in and they can enjoy community services. And in some poor countries, there are still child laborers. I hope they can go to school. And they will become rich. I also hope the cruel wars will end soon. The people there can live   (幸福的) lives. There will be smiles on t  faces. I hope the world will change better and b .