—He to the meeting. Have you informed him of it?
—Sorry. I to.
A. hasn’t e; am going
B. didn’t e; have forgotten
C. hasn’t e; forgot
D. doesn’t e; will have
网友回答
A. hasn’t e; am going
B. didn’t e; have forgotten
(答案→)C. hasn’t e; forgot
D. doesn’t e; will have
解析：第一句话Have you informed him of it?
暗示了时间状语so far；而第二句话暗含时间状语then，指当时发生的动作。