—Jack, you look very tired today.

—Yes, actually I've been _____ busy these days _____ I can't get enough sleep. [ ]

A. so, that

B. such, that

C. too; to

D. such a; that

简述集中抄表终端（集中器、采集器）故障排查作业中，终端检查检测作业内容（工作规范和质量要求）