We finished the run in less than half the time ________ .
A. allowing B. to allow
C. allowed D. allows
We finished the run in less than half the time ________ .
A. allowing B. to allow
C. allowed D. allows
【解析】选C。考查非谓语动词作定语。句意:我们用了不到被允许的时间的一半就跑完了。time后缺少定语,“时间”与“允许”之间是被动关系,因此用过去分词形式。