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________ he thought he was helping us with the work, he was actually in the way.

A. Although　      B. Unless               C. Because　　      D. When

____he thought he was helping us with the work, he was actually in the way.            

A. Although      B. Unless C. Because       D. When

He thought he was helping us with the work, he was actually in the way.

A．Although  B．Unless      C．Because    D．When

       he thought he was helping us with the work, he was actually in the way.            

       A．Although  B．Unless      C．Because    D．When

_____ he thought he was helping us with the work, he was actually in the way．