阅读下列短文，按照句子结构的语法性和上下文连贯的要求，在空白处填入一个适当的词或使用括号中词语的正确形式。

    Many people like pandas very much because they are very cute. Most of them come  Sichuan, China. They have white hair  big eyes. And  (they) ears, legs and shoulders are all black too. Pandas are usually heavy, but they can climb trees like koalas. Their favorite food  (be) bamboo. They like to eat a lot. It takes pandas a lot of time  (eat) food every day. When pandas are full, they like  (sleep). They sleep many  (hour) every day.  there are not many pandas in the world today. They are  great danger. Because people cut down too many bamboo trees, pandas can't find much food. I think we must help them. We can plant more bamboo trees and be  (friend) to pandas.