摘要:第一节 单项填空(共15小题,每小题1分.共15分) 从每题所给的A.B.C.D四个选项中.选出可以填入空白处的最佳选项. 例:It is generally considered unwise to give a child he or she wants. A. however B. whatever C. whichever D. whenever 答案是B.21. - Wow, your homework looks great! - I it on my computer. A. did B. do C. will do D. had done

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