Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions:

Question 29: I didn’t know that you were at home. I didn’t drop in.

     A. I didn’t know you were at home although I didn’t drop in

     B. Not knowing that you were at home, I didn’t drop in

     C. If I knew you were at home, I would drop in

     D. Not knowing that you were at home, but I still dropped in