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 vain | D．in effect |
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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 vain | D．in effect |
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