Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

Câu hỏi

___________ tourism helps people keep profits local.

A. Mass

B. Sustainable

C. Focused

D. Popular

Đáp án
B. Sustainable

Câu hỏi thuộc Bài tập:

Ms. Dung Purple - Unit 10: Ecotourism - Vocabulary