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

Both local people and tourists should be responsible for __________the environment.

A. protect

B. to protect

C. protecting

D. protection

Đáp án
D. protection

Câu hỏi thuộc Bài tập:

Ms. Dung Purple - Unit 10: Ecotourism - Vocabulary