问题补充：
I to go shopping that Saturday, but the bad weather made me change my mind.
A. plan
B. would plan
C. had planned
D. have planned
答案：
A. plan
B. would plan
(答案→)C. had planned
D. have planned
解析：本题考查时态。根据句意可知用过去完成时，had planned表示原打算。句意：上个周六我原打算去购物的，但坏天气让我改变了主意。
