对于需要试生产的建设工程项目，建设单位应当在项目投入试生产之日起( )内向环保行政主管部门申请对其项目配套的环保设施进行竣工验收。

A．30日

B．6个月

C．15日

D．3个月

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