公共娱乐场所按规定一般应设置的消防安全设施、设备包括（）。（中）

A、灭火器

B、报警电话

C、火灾事故应急照明灯

D、灯光疏散指示标志

E、低压电气漏电保护报警器

— Do you know where David is? I couldn't find him anywhere.

— Well. He _____ have gone far-he told me he would come back in 5 minutes. [ ]

A. shouldn't

B. mustn't

C. can't

D. wouldn't