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()34.(2015•泰安)一Ourclassmateswenttoaconcertyesterdayafternoon.—Whatapity!Imyhomework.A.haddoneB.wasdoingC.amdoingD.woulddo

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() 34. (2015 •泰安) 一Our classmates went to a concert yesterday afternoon.

—What a pity!I my homework.

   A. had done   B. was doing

   C. am doing   D. would do

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答案和解析
34. B