There used to be a lake in the park, ? A. didn’t it B.usedn’t it C.usedn’t there D.didn’t used ——青夏教育精英家教网—

摘要：There used to be a lake in the park, ? A. didn’t it B.usedn’t it C.usedn’t there D.didn’t used there

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There used to be a lake in the park, _______?