In the following passage, some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each number.
Lord Baden Powell, the founder of Scouting was himself an army scout. During .......... (1) war in South Afiica, when soldiers ........... (2) not easily available, he selected a few boys .......... (3) worked as messengers and did a wonderful .......... (4) as little scouts. Since then, the Scout Movement has ............. (5) throughout the world.
Select the most appropriate option to fill in blank No.3.