Is it the years  _______  you worked in Africa as a doctor  _______  have a great effect on your literary works?

A. that; where                  B. that; that      

C. when; where                D. when; that 

Is it the years  _______  you worked in Africa as a doctor  _______  have a great effect on your literary works?

A. that; where                  B. that; that      

C. when; where                D. when; that

Is it the years  _______  you worked in Africa as a doctor  _______  have a great effect on your literary works?

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

Is it the years _______ you worked in Africa as a doctor _______ have a great effect on your literary works?

A. that; where           B. that; that              C. when; where          D. when; that