Would you slow down a bit,please? I can't ____ you.[ ]

A. keep up with              

B. put up with

C. make up to                

D. hold on to

（）负责审核进入有限空间工作的必要性和施工单位班组有限空间作业安全培训情况。

A.批准人

B.签发人

C.申请人