Question

The Transport Minister constituted __one-man committee to look__the demand of Transport operators for__increase of fares. (article and prepositions)

Answer 1

1_a

2_at/on

3_an/the..

Answer 2

The answer is “The Transport Minister constituted a one-man committee to look after the demand of Transport operators for the increase of fares”.  

All the articles and prepositions are used according to the grammatical rules.

In the first gap the article “a” is used instead of “an” (before vowel) because one spells not like a vowel. It is spelling like a W.