Directions : In these questions , a part of the sentence is given in bold . Below are given alternatives to the bold part at (A) , (B) and (C) which may improve the sentence . Choose the correct alternative . In case no improvement is needed you answer is (D ) .

He backed out of the agreement.

In each of the following sentences, there is a blank space. Below each sentence,there are five words out of which one can be used to fill the blank to make the sentence grammatically and coherently correct. Find the most appropriate word that fit into the blank contextually.

Our Constitution was based on the belief that the free___________ of ideas, people and cultures is essential to the___________ of a democratic society.

For measuring distances in miles and furlongs and area in acres which of the following chains is/are used? 

In each of the following questions, sentences are given with blanks to be filled in with an appropriate word (s). Four alternatives are suggested for each question. Choose the correct alternative out of the four and indicate your choice for the correct answer.

The department head insisted that he_______ absolute authority to regulate office work.

In the following question find out the missing number?