His efforts to raise money for his program were because no one showed any intention to take a cent out of their pockets.
A. in place
B. in sight
C. in effect
D. in vain
网友回答
A. in place
B. in sight
C. in effect
(答案→)D. in vain
解析：in place 在适当的位置; in sight 在视力所及范围之内; in effect 实际上; in vain 徒劳。