Liu Xiang got the gold medal yesterday,thus again ----he is the best players in the world. A:to prove B: to have proved C: proving D:being proved .哪个答案好.详细解析
选Cthus后接动名词,排除A和B,D为被动态,不可能为正确选项,thus 指代Liu Xiang got the gold medal yesterday这句话
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