. His efforts to persuade him to make a
题型:选择题
问题:
. 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
. 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