Fill in the blank with the correct preposition:
 She sat here _______ 8 O'clock.

Directions: Which of the phrases (A), (B), (C) and (D) given below each sentence should replace the phrase printed in bold type to make the sentence grammatically correct. If the sentence is correct as it is, mark (E), i.e., 'No correction required' as the answer.    

He admired the speed with which Koti completed the work and appreciating the method adopted by him

16 पुरुष 7 दिनों में एक काम पूरा कर सकते हैं। 28 आदमी एक ही काम को कितने दिनों में पूरा करेंगे?

यदि DIG को 25 के रूप में और CUT को 49 के रूप में कूटबद्ध किया जाता है तो KICK को किस रूप में कूटबद्ध किया जाएगा ? 

नेशनल इंस्टीट्यूट ऑफ वायरोलॉजी कहाँ स्थित है?

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 ) .

Many a man would welcome to opportunity