We had planned to climb the hill this morning, but the heavy rain our plan.
A. settled
B. ignored
C. upset
D. received
网友回答
A. settled
B. ignored
(答案→)C. upset
D. received
解析：考查动词：A. settled定居，解决，B. ignored忽视，C. upset使不安，使难过，扰乱，D. received收到，句意：我们本来计划今天早上爬山，但是大雨扰乱了我们的计划。选C。