问题
选择题
The plan _____ just because people were unwilling to cooperate.
A．broke up
B．broke down
C．broke away
D．broke off
答案
答案：B
题目分析：考查动词短语意义。Break up打碎，分手，解体，break down失败，崩溃；break away脱离，break off折断，由题意：因为人们不愿意合作计划落空了。可知B项正确。