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

Câu hỏi

The tour of the cave and grotto system is the main ________ for tourists in Phong Nha - Ke Bang National Park.

A. attractive

B. attractiveness

C. attract

D. attraction

Đáp án
D. attraction

Câu hỏi thuộc Bài tập:

E11- GS- Unit 6- Practice 4