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Correct the errors in the following sentences. 1) Many years ago, Jim had lived in Paris with his uncle for a long time. 2) The teacher told the students that light traveled much faster than sound. 3) He told us he had joined the Party in 2010. 4) It is snowing every day since last Sunday. 5) Bob has got married six years ago. 6) By 2050, scientists surely must discover a cure for AIDS. 7) John has gone to Beijing several times and he knows the place very well.