—All of us had a good time in the picnic last Sunday. Pity you weren't there.  

—I really ________ come but I was looking after my mother in hospital.  [ ]

A. must  

B. ought to

C. need have  

D. should have

安防中心控制室应配置能与报警同步的终端图形显示装置，能准确地识别报警区域，实时显示发生警情的等信息（）

A、区域

B、日期

C、时间

D、报警类型