While working as a travel agency, my elder brother specialized in arranging tours of46/50Mark the letter A, B, C, or D on your answer sheet to indicate the underlined 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.a travel agency While specialized in tours ofGiải thíchĐáp án A A travel agency => a travel agent