2015-2016学年 外研版 必修三 Module 2 Developing and developed countries integrating skills课件 (10)
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5. Some people waste a lot of food _____ others haven’t enough to eat. A. however B. when C. as D. while 6. _____ he had to write a history paper, _____ he couldn’t find time to do it. A. Although; but B. Although; / C. Even thought; / D. Even if; /