every means ___tired to solve theproblem,but none of them worked A has B has been Chave Dhave been

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• M any possible means ___been tired ,but __worked .A have,none B has ,a few C has ,none Dhave,a few
• every means ___tired to solve theproblem,but none of them worked A has B has been Chave Dhave been
• M any possible means ___been tired ,but __worked .A have,none B has ,a few C has ,none Dhave,a few
• every means ___tired to solve theproblem,but none of them worked A has B has been Chave Dhave been
• result为什么用作不可数 All means have been tried out without much result.
• Every means ____ tired out but without much resultA have been B has been C are D is怎样翻译