问题
选择题
. His efforts to persuade him to make a donation were ____ because he showed no intention to take a cent out of his pocket.
A．in place
B．in sight
C．in vain
D．in effect
答案
答案：C
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. His efforts to persuade him to make a donation were ____ because he showed no intention to take a cent out of his pocket.
A．in place
B．in sight
C．in vain
D．in effect
答案：C