______ we deal with our problems ,we can easily become unhappy.

A. Unless    B .Until      C. Though      D. Whether

 ______ we deal with our problems ,we can easily become unhappy.

A. Unless    B .Until      C. Though      D. Whether

 _____ we deal with our problems, we can easily become unhappy.

A. Unless                      B. Until                         C. Though                    D. Whether

________ we deal with our problems, we can easily become unhappy.