Jihan: Thank God, I made it in time.

Ilyas: Last night’s blackout took such a long time. It was more than two hours.

Jihan: Did you finish writing it then?

Ilyas: Unfortunately no. I was in the hospital because my grandfather had an operation.

Jihan: I am so sorry to hear that. What happened?

Ilyas: It was a long story. But you know what, now, I understand that electrical power has become an (1) indispensable part of our life. Our activities depend on supply of electrical power.

Jihan: How was the surgery then?

Ilyas: He could survive with some devices. After two hours of blackout, finally he had his surgery. It went well.

Jihan: That’s a relief. From the news I watched this morning, (2) power outages can be disastrous in places like hospitals.

Ilyas: Yeah. That’s bad, isn’t it? How many people will suffer because of this problem?

Jihan: Therefore, it is important to know about the possible causes of power failure in order to better protect
ourselves from its (3) devastating effects, right?

Ilyas: I couldn’t agree more. Once we have identified all that can possibly go wrong, it is easier to ensure that (4) adequate safety precautions are taken.

( Tribunpekanbaru.com )