驻外人员的工资一般由两大部分组成，一部分是直接工资收入，另一部分是（）。
参考答案：福利待遇
I _______ that the job has been filled.
A．regret to say
B．regret saying
C．regret to have said
D．regret said
They found _______very hard to move the stone.
A．it
B．its
C．this
D．that
