It's hard for us to say goodbye______ we have so many happy days to remember.( )
A. |
so |
B. |
because |
C. |
although |
D. |
until |
It's hard for us to say goodbye______ we have so many happy days to remember.( )
A. |
so |
B. |
because |
C. |
although |
D. |
until |