Read the following passage and choose the best answer for each blank.
Although some groups of people have always lived outdoors in tents, camping as we know it today only began to be (26)_______ about 50 years ago. The increase in the use of cars and improvements in camping (27) _______ have allowed more people to travel longer (28) _______ into the countryside and to stay there in greater comfort. Many campers like to be (29) _______ themselves in quiet areas, so they (30) _______ their tent and food and walk or cycle into the forests or the mountains. Others, preferring to be near people , drive to a public or privately-owned campsite (31) _______ has up-to-date facilities ,(32) _______ hot showers and swimming pools. Whether campers are (33) _______ in the mountains or on a busy site, they should remember to (34) _______ the area clean and tidy. In the forests, they must put out any fires and keep food hidden to avoid attracting (35) _______ animals.
Question: In the forests, they must put out any fires and keep food hidden to avoid attracting (35) _______ animals.
A. wild
B. natural
C. loose
D. free
wild (adj): hoang dã
natural (adj): tự nhiên
loose (adj): lỏng
free (adj): tự do
=> In the forests, they must put out any fires and keep food hidden to avoid attracting wild animals.
Tạm dịch: Trong rừng, họ phải dập tắt đám cháy và giấu kín thực phẩm để tránh thu hút động vật hoang dã.
Đáp án cần chọn là: A