15. Answer the following questions in about 30 words :
(1) What was the duty of the little boy?

Ans. The duty of the little boy was to come to shoal early in the morning each day to start the fire in the coal stove and warm the room before his teacher and his class mates arrived.

(2) What was Tcherviakoff doing in the opera house?

Ans. Tcherviakoff was watching a famous opera in the opera house.

(3) Why did Dr. Kalam go to Delhi?

Ans. Dr. Kalam went to Delhi for the interview at DTD&P (Air) Directorate of technical Development and Praduction.

(4) Why did Babuli give the paper slip to his elder sister-in-law?

Ans. Babuli gave the paper slip to his elder sister-in-law to deliver it to his elder brother because he himself had to no courage to meet him.