—Why didn’t you turn up last night, Huck?
—I to go for a walk, but someone called and I couldn’t get away.
A. was planning
B. planned
C. had planned
D. would plan
网友回答
A. was planning
B. planned
(答案→)C. had planned
D. would plan
解析：考查虚拟语气：句意：--昨晚你怎么不出现？--我正计划去散步呢，有人叫我，我走不开。Had planned是一种虚拟语气“本打算做却没做”，选C。