Answer:
literal substitute 01- nonstop
literal substitute 02- perpetually
literal substitute 03- 24/7
literal substitute 04- constantly
literal substitute 05- all the time
Explanation:
"around the clock" is a phrase that is used to describe someone or something that is working all day long
<em>The</em><em> </em><em>emergency</em><em> </em><em>telephone</em><em> </em><em>lines</em><em> </em><em>operate</em><em> </em><em>around</em><em> </em><em>the</em><em> </em><em>clock</em><em>.</em>
literal substitute 01- the emergency lines operate nonstop.
literal substitute 02- the emergency lines operate perpetually.
literal substitute 03- the emergency lines operate 24/7.
literal substitute 04- the emergency lines operate constantly.
literal substitute 05- the emergency lines operate all the time.