I'll never forget the day _______ I bought my own guitar with my own money.

A. where           B. on which             C. on when         D. that

I'll never forget the day _______ I bought my own guitar with my own money.

I'll never forget the day _______ I bought my own guitar with my own money.

1. A.
   where
2. B.
   on which
3. C.
   on when
4. D.
   that

I'll never forget the day _______ I bought my own guitar with my own money.

A. where           B. on which             C. on when         D. that

I'll never forget the day _______ I bought my own guitar with my own money.