根据句子意思及所给的词首字母或汉语提示，完成下列单词。
Some people                (浪费) food while others don’t have enough food to eat.
Linlin is good at English, but I’m w               in it.
In the past, few children had the chance to receive a good              （教育）.
—Have you ever been a             _?
—No, I have never been to any foreign country.
You can’t learn English well u               you work hard.