The correct spelling is ¾.

1.The main idea of the passage is-

2.I believe books will never disappear. It is impossible for it $\to$ happen. Of all mankind's diverse tools, undoubtedly the most astonishing are his books. All the others are extensions of the body. The telephone is a extension of his voice, the telescope and microscope are extensions of his sight, the sword and the plough are the extensions of his arms. In Caesar and Cleopatra, when Bernard Shaw refers $\to the Library of$ Alexandria, he says it is mankind's memory. Humanity's vigils have generated infinite pages of infinite books. Mankind owes all that we are $\to the written$ word. 'Humanity $vigils^{\prime} refer \to-$

3.He fell ¾ his bike.

4.I was totally baffled ¾ Nina's behaviour

5.We must start an inquiry ¾ the cause of the accident.

6.We have postponed ¾ anyone the news until after Eid.

7.The charge for ¾ excess luggage is Tk. 600 per kilo.

8.We didn't spend ¾ money.

9.Don't worry, you can ¾ me. I'll do the job for you.

10.Well done! ¾ the good work.

11.I can't quite ¾ out what the sign says.

12.If cigarettes were banned, life ¾