－How did it that the secretary knew where we were?
－Maybe he had been following us.
A. e about
B. e across
C. e off
D. e round
网友回答
(答案→)A. e about
B. e across
C. e off
D. e round
解析：考察动词短语辨析。A形成，产生，发生；B遇见，发现；C成功；戒除；D苏醒，周而复始；句意：—那个秘书怎么会知道我们在的地方的？—也许他一直都在跟踪我们。根据句意说明本句中的e about表示发生，产生；故A正确。