I ___ to go for a walk,but someone called and I couldn't get away.A.was planningB.plannedC.had plannedD.would plan答案为什么是C?那B为什么不对呢?我觉得不用过去完成式也能读的通

问题描述:

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
答案为什么是C?
那B为什么不对呢?我觉得不用过去完成式也能读的通