【题目】He must have sensed that I ________ him. He suddenly glanced at me and said quietly, "Why are you staring at me like that?"
A.would look at
B.looked at
C.was looking at
D.am looking at

【答案】C
【解析】句意：他一定是注意到我在看着他。他突然看向我然后轻声问道：“你为什么要那样盯着我看？”根据此句中的must have sensed和glanced at可知是过去进行时，故选C。