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11. ______ she is young, she knows quite a lot.

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

11. ______ she is young, she knows quite a lot.

A．When

B．However

C．Although

D．Unless

 

___she is young, she knows quite a lot.　
A. When　     B. However　       C. Although　       D. Unless