—Is that the laundry? I have some clothes ________.

—Leave them in your room,please,and we're going to fetch them soon.

[ ]

A. to wash  

B. to be washed

C. washed  

D. washing

初步可行性研究阶段投资估算的允许误差率为( )。

A．大于±30%

B．±30%以内

C．±20%以内

D．±10%以内