. My first summer vocation in the high school, _______I spent a fortnight on the farm, is really unforgettable.

A. when         B. that            C. which         D. the one

 My first summer vocation in the high school, _______I spent a fortnight on the farm, is really unforgettable.

A. when         B. that            C. which         D. the one

My first summer vocation in the high school, _______I spent a fortnight on the farm, is really unforgettable

1. A.
   when
2. B.
   that
3. C.
   which
4. D.
   the one

My first summer vocation in the high school, _______I spent a fortnight on the farm, is really unforgettable.

A. when         B. that            C. which         D. the one

. My first summer vocation in the high school, _______I spent a fortnight on the farm, is really unforgettable.

A. when         B. that            C. which         D. the one