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49、A. through B. across C. along 50、A. speed up B. go ahead C. slow down 51、A. take B. wear C. carry 52、A. half B. none C. both 53、A. look around B. take care C. take a seat 54、A. sign B. stop C. corner 55、A. and B. so C. or (责任编辑：admin) |
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49、A. through B. across C. along 50、A. speed up B. go ahead C. slow down 51、A. take B. wear C. carry 52、A. half B. none C. both 53、A. look around B. take care C. take a seat 54、A. sign B. stop C. corner 55、A. and B. so C. or (责任编辑：admin) |