Question 32: Mark the letter A, B, C, or D on your answer sheet to indicate the undelined part that needs correction in each of the following questions: While working as a travel agency, my elder brother specialized in arranging tours of the Mekong Delta for foreign tourists.
“work as + N indicates occupation”
“travel agency”: travel agency agency
⇨ Answer A. Change to: “travel agent” : travel agent
=> While working as a tour operator, my brother specialized in arranging tours to the Mekong Delta for foreign tourists.