【推荐1】The Chinese government has set up Confucius Institutes in more than 80 countries. And many foreign students fight________a chance to learn Chinese. (用适当的词填空)

【推荐2】At last, he found that the goals ________ he had fought all his life no longer seemed important to him.

【推荐3】They had to fight hard ________ improvements to the road system. （用适当的词填空）

【推荐2】He asked to be put under police_________(protect) . (所给词的适当形式填空)