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麻烦老师解答:Alice,youweresuppAlice,youweresupposedyourpaperlastSunday.Whyhaven'tyoufinishedityet?[]A.tofinishingB.tohavefinishedC.finishingD.havingfinished

题目详情
麻烦老师解答:Alice,you were supp
Alice,you were supposed ________ your paper last Sunday.Why haven't you finished it yet? [     ]
A.to finishing
B.to have finished
C.finishing
D.having finished
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答案和解析
B