精选优质文档-倾情为你奉上语法选择（一）A 12yearold boy named Tim Brown got lost in the mountains. However, he saved himself at last thanks to his _1_ survival(生存，幸存) skills.One day, Tim went hiking _2_ his group in the Magaliesberg Mountains, South Africa. At first, everything went well. But at about one oclock in the afternoon, he lost his way and couldnt find any _3_ people. He got scared(害怕) at first, but then he tried to calm down. He knew 4 to do in such a situation. “I should follow t
