Alice : What is your father doing these days?

Çetin : He - - - - to camping this month. He - - - - it a lot.

Look! Buğra - - - - to climb the wall of this garden.

Brain : - - - -?

Jack : Ann is preparing the breakfast now.

We - - - - to hurry. We have plenty of time.

Alice : Where is your brother?

Bengü : He - - - - at the moment.

When you see an old man crossing the street - - - -.

Serdar : Why do you want to be a doctor? You have got allergy to the blood.

Mike : - - - -.

Serdar : But what else can the doctors do?

Mike : Doctors do a lot of work and they don’t have to see the blood.

When you go to Istanbul, you can - - - - pictures in front of the mosque and get inside the building, but you must - - - - your shoes off.

You are having a Maths exam tomorrow, but you don’t know how to study. You want help from one of your friends so you say:

The Sun is a huge ball of gases. It has a diameter of 1,392,000 km. It is so huge that it can hold millions of planets inside it. The Sun is mainly made up of hydrogen and helium gas. The surface of the Sun is known as the photosphere. The chromospheres surrounds photosphere with a thin layer of gas. Without it, there would be no life on Earth. There would be no plants, no animals and no human beings as all the living things on Earth get their energy from the Sun for their survival.

 We can understand from the passage that - - - -.

The Sun is a huge ball of gases. It has a diameter of 1,392,000 km. It is so huge that it can hold millions of planets inside it. The Sun is mainly made up of hydrogen and helium gas. The surface of the Sun is known as the photosphere. The chromospheres surrounds photosphere with a thin layer of gas. Without it, there would be no life on Earth. There would be no plants, no animals and no human beings as all the living things on Earth get their energy from the Sun for their survival.

 What can be title of the passage?

The Sun is a huge ball of gases. It has a diameter of 1,392,000 km. It is so huge that it can hold millions of planets inside it. The Sun is mainly made up of hydrogen and helium gas. The surface of the Sun is known as the photosphere. The chromospheres surrounds photosphere with a thin layer of gas. Without it, there would be no life on Earth. There would be no plants, no animals and no human beings as all the living things on Earth get their energy from the Sun for their survival.

What does “it” refer in the text?