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I. Rewrite senteces as directed so that it has the same meaning as the sentence given. 1. Thinking of making toys from used paper was his interesting idea. 2. People should stop experiments on animals. 3. France presented the Statue of Liberty to the United States in 1876. 4. Vinh keeps...

1. em hãy kể lại một lần phạm lỗi khiến em nhớ mãi.

1. Cho a^{2}+b^{2}+c^{2}=a^{3}+b^{3}+c^{3}=1. Tính S = a^{2}+b^{2012}+c^{2013}