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―I dropped in at your house at about eight yesterday evening , but you weren’t in .

 ―I        regular exercises at the club .

       A．did                     B．had done             C．was doing           D．have done

—I dropped in at your house at about eight yesterday evening, but you weren’t in.

—I _____ regular exercises at the club.

A．did                 B．had done          C．was doing        D．have done

 ---I dropped in at your house at about eight yesterday evening, but you weren’t in.

---I ______ regular exercises at the club.

A. did                  B. had done        C. was doing          D. have done

—I dropped in at your house at about eight yesterday evening．but you weren’t in．

　 —I　　　　　　 regular exercises at the club．

　 A．did　 B．had done　 C．was doing 　　 D．have done

（2010·北京市通州區(qū)高三一模）       26．—I dropped in at your house at about eight yesterday evening．but you weren’t in．

    —I              regular exercises at the club．

A．did    B．had done   C．was doing D．have done

（2010·北京市通州區(qū)高三一模）       26．—I dropped in at your house at about eight yesterday evening．but you weren’t in．

    —I              regular exercises at the club．

A．did    B．had done   C．was doing D．have done