【题目】The only one in our office that is familiar with the new system is Jimmy, in _____ absence, we had no choice but to wait.
A.whom
B.whose
C.who
D.that

【答案】B
【解析】考查定语从句。引导词在定语从句中做定语。in one's absence, 在某人不在的时候, 句意：我们办公室里对新系统熟悉的只有Jimmy, 他不在,我们只有等待他来,别无选择.故选B。