_____in the forest,the hunter must have learned enough survival skills before.A Survived B Surviving C To survive D Having survive (c 为什么不正确 表目的不行吗?)

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_____in the forest,the hunter must have learned enough survival skills before.A Survived B Surviving C To survive D Having survive (c 为什么不正确 表目的不行吗?)

must have learned表明猎人已经在森林里居住了,如果是must learn 就可以选C了

看must have learnd.....bofore,明显不是表目的