1338] they keep the water clean. they make the tank look much prettier. [译文] 首先他们使水保持清洁.其次他们使水箱更好看些. A. For; And B. For one thing; And C. For; Also D. For one thing; Also [答案及简析] D. for one thing-.also-.常用句型."一则-再则-,首先-其次-" 查看更多

 

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