Most of the artists ______ to the party were from South Africa.

A．to be invited

B．invited

C．being invited

D．had been invited

对工程项目的长远经济效益和战略方向起决定性作用的阶段是( )。

A．策划决策阶段

B．准备阶段

C．实施阶段

D．竣工验收和总结评价阶段