I had forgotten the date of that important battle so I _____ a history book.

1. A.
   brought up
2. B.
   referred to
3. C.
   looked at
4. D.
   looked up

 I had forgotten the date of that important battle so I _____ a history book.

       A. brought up B. referred to  C. looked at         D. looked up

I had forgotten the date of that important battle so I _____ a history book.

       A. brought up B. referred to  C. looked at         D. looked up