根据下列句子及所给汉语注释写出空缺的各单词的正确形式，每空一词。
1Everybody knows she benefited from her (锲而不舍) and hard work.
答案 perseverance
2All the countries in the world are cooperating to wipe out all the (追随者) of Alquida.
答案 followers
3The (形势) home and abroad forced us to take urgent measures.
答案 circumstances
