Read the questions. Then listen again and choose the correct answers. (Đọc câu hỏi. Sau đó nghe lại và chọn các câu trả lời đúng.)

1. To go on the Desert Challenge course, …

a. you must be under thirteen.

b. you must see a doctor.

c. you should come with a friend.

2. You must take a lot of water because …

a. you'll need it for cooking.

b. you'll get very thirsty.

c. you won't find any in the desert.

3. When it gets hot, …

a. you mustn't take your clothes off.

b. you should wear shorts and a T-shirt.

c. you should drink a lot of water.

4. If you get lost, …

a. you should wait for help to arrive.

b, you should use your mirror to signal for help.

c. you should use your map to get out of the desert.