______ you have tried it, you can’t imagine how pleasant it is.

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

______ you have tried it, you can’t imagine how pleasant it is.

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

______ you have tried it, you can’t imagine how pleasant it is.
A. When.      B. Because.     C Although.     D. Unless.

 ________ you have tried it, you can’t imagine how pleasant it is.

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

_____ you have tried it, you can’t imagine how pleasant it is.　

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