I’m a smartphone. I am Kevin’s best friend     26   makes me very happy. He interacts       27     me anytime, anywhere, even on a date or at school. However, this has caused him some problems. Last month, his girlfriend Nina asked him to choose between her and me. She said she   28     for a long time, and she couldn’t stand it anymore. Kevin couldn’t live without me, so he had no choice but   29    goodbye to Nina. What was worse, Kevin uses me in class and thus ignores his studies.   30   , his grades have become lower and lower. I feel so sorry about that.
【題組】26.( )
(A) whom
(B) , that
(C) , who
(D) , which