问题补充:
The plan just because people were unwilling to cooperate (合作).
A. broke down
B. pulled down
C. turned down
D. put
答案:
(答案→)A. broke down
B. pulled down
C. turned down
D. put
解析:本题为词语的辨析。break down指失败,(车等)抛锚;pull down指推倒;turn down指拒绝;put down指放下。