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.
I had known that my mother was sick as a result of a failing kidney, but I had not realized how much trouble my parents were having in dealing with that sickness.
A. Although I had known that my mother was suffering from a failing kidney, I had not realized my parents’ problems caused by this illness.
B. In my childhood I didn’t know my mother’s sickness, so I couldn’t realize how much trouble my parents had.
C. When I learned my mother’s sickness which was the result of a failing kidney, I realized the pain my mother had.
D. I hadn’t realized the problems they had to deal with until my parents told me about my mother’s illness.
